Sure why not? Lets give it a shot.
1. Resident Evil 1 Remake: While not my personal favorite of the series, I think I'd have to place this one at the top as it was truly an impressive remake. I can't really think of anything wrong with it either. It's a massive improvement over the original in every single way, while also being completely faithful to it. They did change and add in a few things, but it was to it's benefit. Nothing that was changed made me think that it was done better in the original, or that it detracted from the experience. It solely added to it. It's one of the best remakes of any game period.
2. Resident Evil: Code Veronica/Code Veronica X: This is actually my personal favorite; my only problem with it being that Steve Burnside is one of the worst supporting characters in the series. It is the longest of the "classic" Resident Evil games, but I don't really have a problem with that. It never really felt like it was dragging or overstaying it's welcome to me. I just feel like this was the most fine tuned of the classic games, and I love it to bits.
3. Resident Evil 2/3: I'm putting these in the same place as I feel exactly the same about both of them. They're both great, classic RE games that mixed things up in some way. With RE2, it was the scenario system which changed how you went through the game. With RE3, it was giving you the ability to make choices that changed what would happen later in the game. Also RE3 introduced the gunpowder system, letting you choose which ammo to make instead of just dealing with whatever you could find. I don't really have a preference for either of them, but I do truly enjoy both them.
4. Resident Evil 2 Remake: This is exactly what I wanted and expected out of a modern Resident Evil game. The only reason it's not higher is because I genuinely enjoy the gameplay of the classic games more. My only real problem with it was the scenario system did not live up to the original's at all. There's more of a genuine difference based on who you play as in general, than who you play as in A or B. Other than that though, it was a good remake overall. The minigames were good too, and I like that they expanded on Tofu's game mode.
5. Resident Evil Revelations 2: Out of all of the modern Resident Evil games before the remake of 2, this one was the best. They tried and somewhat succeeded at recapturing some actual atmosphere. The episodic nature of the game was pointless and unneeded though. In fact I feel that it hurt the game as I'm pretty sure that's what forced the whole going back and forth between Claire and Barry every single chapter. Playing through the game as Claire fully, and then Barry fully makes more sense. It had it ups and downs, but overall I really enjoyed the game. Mechanically it was great, and I feel like this game perfected what 5 and 6 were trying to do when it comes to that. Also it has Raid Mode, which is the best "minigame" in the damn series. I just have one problem with the Raid Mode in this game which is that it doesn't have a proper "end game" like the original did.
5.5 Resident Evil Revelations 1 Raid Mode/Ghost Ship: I was gonna include this in the previous section, but it's good enough for this. Revelations 2's Raid Mode is better than the original version of it in every way except for one thing: Ghost Ship. Ghost Ship was the "endgame" of the Raid Mode in Revelations 1 and I liked the concept of it so much I'm including it on this list. You have the entire main area of the campaign as your map to play on in this mode. Your objective is to go through and explore it. As you clear out areas you'll get keys that can unlock other sections of the ship. These keys can open any of the locked doors, so you're not railroaded into taking one specific path. Your goal is to make it to the deck, which you can actually do fairly early on. However if you go there right away, it simply ends. If you make your way through the whole ship, clearing it out, when you go to leave you'll have a tough fight waiting for you on the deck ending with a final boss which is the "true" way of completing it. It's genuinely challenging and lengthy and I love it. The main game though is...meh at best. Revelations 1 is all over the place and was a bit of a mess. Ghost Ship is fantastic though.
6. Resident Evil 5 Mercenaries: The main game is, at best, an okay co-op game. At worst, it's a Resident Evil game that misses the point entirely. However, the Mercenaries minigame in this one is the best version of it in the series. I don't want to drone on about it, but I put a ridiculous amount of time in the Mercenaries mode in this game and loved every minute of it. I also did have fun with the main campaign. It wasn't good, but I did have fun with it and speedrunning this game co-op is a blast.
7. Resident Evil 0: They cut item boxes in a classic Resident Evil game....I feel like I shouldn't have to say more than that. Once you play through it a few times and understand where everything is, that stops being a problem, but it shouldn't have been a problem in the first place. The whole "you control two characters" thing was unneeded as well. I get they were experimenting, but I feel like they kind of fell flat on their face. Granted, I still enjoyed the game a fair bit and I personally didn't have too much of a problem with having no item boxes. But, I still think they messed up. The minigame in this one was pretty good too. I don't remember the name of it, but I do remember it was basically a scavenger hunt across the mansion looking for these "leech" items while dealing with enemies. Finding a good route to do so was pretty fun.
8. Resident Evil 4: I like 4, and it was the game that got me into doing challenge/speedruns of the Resident Evil games. However, I feel that in most ways this game has been surpassed at this point by other entries in the series. It's still a great game though, and one that genuinely left an impact on the industry. Also it's Mercenaries mode was pretty damn good.
9. Resident Evil Outbreak/Outbreak File 2: These games were way ahead of their time, and had some great ideas. However, I never felt like they were truly "complete" if that makes any sense. Like they were still working things out. I had fun with them online, which is ultimately where they shine, but solo they really aren't that great. Unfortunately, you're pretty much only going to be playing these solo at this point. They can still be fun solo, but it really isn't the same.
10. Resident Evil Survivor and Resident Evil Dead Aim: These goofy fucking games. They're not really "good", but I wouldn't completely write them off either. I don't really like them much, but I get always laugh out of playing them and that's worth something.
11. Resident Evil 6: It was a complete fucking mess in every single way. They tried to do so many different things at once, and failed at doing all of it. The cherry on top is that the story in this one is mind-numbingly stupid even for a Resident Evil game. Also as someone who really doesn't like Ada, a game that completely revolves around her didn't help it in my book. The Mercenaries mode wasn't even as good as it was in 5, which is something that baffled me. Shout out to Jake/Sherry's campaign for being particularly awful.
I've played all of the light-gun/rail shooter RE games, but I didn't really care for them as I don't really care for that genre in particular. I didn't include them on the list because I don't know where I'd place them. Probably still above 6 though. I didn't include the original RE1 or any of it's versions on the list because I have no idea where I'd place it either. The remake of it pretty much replaced that game for me and I haven't touched it in over a decade. Gaiden I've never played, although I would like to play it at least once.
Edit: I totally forgot about Operation: Raccoon City. It was trash, but the multiplayer was at least somewhat interesting. For that alone I'd place it above 6.