Digging into my indie library on PS4, lets see...
7 Days to Die, Absolver, Astroneer, Battle Chasers : Nightwar, Brawlhalla, Child of Light (being a bit loose with indie here, though I'd say it fits), Counterspy, Dust : An Elysian Tale, Helldivers, Hob, Journey to the Savage Planet, Kiling Floor 2 (asterisk that one cause its not great SP at all), Outward, Pixark (if they manage to not horribly break it and take months to fix the patch again), Portal Knights, Rebel Galaxy, Remnant from the Ashes, Salt and Sanctuary, Steamworld Dig, Steamworld Heist, Terraria, Trailmakers.
I'm in the midst of Generation Zero as well, too early to comment on though it seems promising.
(I put the bolds on the procedural generated ones, to the original request. Italics for the Metroid vanias)
Battle Chasers and Child of Light are both JRPG-throwbacks of sorts (though neither is Japanese in origin),/ Rebel Galaxy is something of a space sim. Outward is a very niche sort of CRPG/ARPG/Survival game hybrid that I'd probably recommend pre-researching cause its either going to be a favorite or you will despise every aspect of it. Trailmakers is a build-your-own=vehicles sim, but also has a sort of open-world metroidvania campaign mode (you need to scavenge parts to build vehicles to get other parts and eventually complete it), and also just has a grand prix racing campaign mode, along with some sandbox options.