Yes indeed, like many professions, civil servants have standards. These include an ethical requirement and contractual obligation to be impartial. Some will fail, many will be imperfect. As said, it's interesting you hypocritically stick up for ICE, but casually condemn civil servants. If you want to sling around accusations, the burden of evidence lies with you.
Do you recall Trump's first term at all? The time the guy tasked with investigating Trump's connections to Russia, based on manufactured evidence, was fired because it leaked that he had texted his illicit lover (on their work phones) that they'd stop him from being president.
You don't care for anecdote, let's look at data:
If you go down far enough, there is a chart of total spending by party, and this is data for civil servants and public officials nationally, not only in DC. The most noticeable thing going on is the rapid rise in donations, cause the times are certainly changing. In total, since the first Obama campaign, with a single off year exception, has been at least 2:1 Democrats, with the last 3 general elections in the 75-80% territory.
But that is taking a bunch of data and putting it together. If your hypothetical studies suggesting "modest lean" for Democrats have any basis, it's guaranteed to be in taking a wide variety of careers and squishing them down to one thing. If you scroll up to the top, there's smaller divisions than just al civil servants. There's a line for the Postal Service, donations are in the 60:40 D to R range. However, that's not going to be a DC thing, postal workers, even higher ranking, are distributed across the country. The Department of Justice and Veterans Affairs are also in that range of "modest lean" Democrats, but those are A) things you would associate with conservatives, and B) also distributed broadly nationally by their nature. NASA is another one in the 75:25 range, but is also another one where a ton of the workforce is in red states. It's not in the list of biggest contributors, but I suspect Department of Defense would look similar to these.
If you look instead at departments that are concentrated in DC:
Department of State: 85:15
Department of Health and Human Services: 90:10
Department of Energy: 90:10
Housing and Urban Development: 95:5
Agriculture: 85:15
Commerce: 90:10
Environmental Protection: 98:2
Treasury: 90:10
So yeah, the federal workforce in DC leans Democrat 90:10. It's not about throwing people under the bus, it's not about accusing people at large of ethical violations, it's about the risk of posed by having all the federal regulatory agencies populated by a bubble that isn't representative of the country they're meant to serve. Even if Trump's appointments are shameless partisan hacks, the gain of bursting that bubble is more important than any damage an individual can do. Republicans wanting to break that monopoly is not some excuse to insert Trump loyalists and make a dictatorship, it's a serious and longstanding point.
So you should be able to understand how ideologies can exist with differing subsidiary ideals, and differing tactics and strategies. But as you evidently don't have an answer, you've gone into the pissy cheap fraud bullshit phase again.
Ok, then what does "deeply ideological" mean to you? You can't have it both ways, you cannot in one breath condemn a work as being deeply ideological, and then in another breath say that ideology can contain a number of different ideals and tactics. Either "deeply ideological" is a serious problematic concept, or it's just a description of something written by people who happen to agree on some things, it can't be both.