Skyrim

You are not alone. In 4 days, 3 people on the forum have reported this same problem.

You posted a screenshot of the mods (just recently) you're playing with, and there is a discussion there about mutually exclusive ones: they use the same file/files, but with different inputs.

That's correct, I was experimenting there to see which mod was screwing with my head, and I was pestering the modder; that doesn't mean I had them all installed together)) just a screenshot of the ones I tried... the question to the modder wasn't about that, I was simply showing him the names of the mods that don't work.
Whether here or there, you're just reading what you want to read, not the whole text! He was the same way, staring at my screenshot without reading what I wrote to him.
"As can be seen, ()Transform_Undead was installed before (and I brought it back) and it worked (obviously I didn't install it together with yours)). I installed all 3 of yours (thinking they were interconnected), deleted them one by one—achieved nothing."
Be attentive and don't just swallow the whole text at once, drawing your own conclusions.
Right here I wrote that I tried everything! And those three people are specifically telling the map makers that unless the problem is fixed, there's no point in cranking out civilizations the size of real Skyrim for Tetris, or maybe they actually didn't clean their folders, I don't know. But I described all the "dancing with tambourines" in detail.
P.S. The screenshot was so it would be clear to you... this is not the game folder! This is another disk with archived games, see the header?
P.S. And authors of such giant works should write in detail right in the header which OS, what's installed, which repack, what settings were used, whether they completed it on all difficulty levels, what resolution, etc., and so on. I can make earrings out of a bolt (as a jeweler), but that doesn't mean you can do it even with my tools. Since you post them for everyone... be kind enough to spell out how you did it and what the weather was like outside.
And don't take everything as an attack... personally, I have no grievances against you. I just lost it when I heard about memory, hardware, and forgotten previous ones. I know all that and can teach others too. I am still waiting for the Community to solve this problem.