Here's a fix for a problem I've had a decently long while ago, but I've seen multiple friends and even randoms in public servers having this problem since. I remember not being able to find a good answer for this on steam and klei forums, so I decided to make my own for other people having the same issues.
(Note: This fix I had were from a few months back in 04/25/24, so sorry if this doesn't end up working in the modern versions of the game. I'm also writing most of this off memory and old screenshots, so sorry if some of this is incorrect xd)

If you've booted up the game and noticed all, if not most of your mods showing up with names like "Workshop-XXXXXXX" (The X's being numbers representing the respective mods steam workshop code) and the thumbnail image being blank, then your DST mod files have been corrupted in a way
Here's the answer right here:

- Before anything else, make sure your game files are all in one drive on your pc, preferably the C: drive. This can cause the issue, so just confirm it before doing anything else and wasting your time. This obviously isn't an issue if your PC only has 1 btw.

- Unsubcribe to all the corrupted mods. Just click that one button in the mod menu that leads you to the highlighted mods workshop page, and if that doesn't work then use the numbers in the name of the mod to find it on the steam workshop (as mentioned earlier, those numbers are the respective mods workshop code.)

- After unsubscribing, go into your game files and delete all the mods manually. During or after this process, you might notice that not all the mods are fixed. If so, then you've only deleted the mods in one of the games mods folders (because yes, there's two. T - T)
The game splits all the mods into two mod folders, V1 having the older mods, V2 having the newer and more advanced mods.
Simply just delete all the mod files/folders in these directories:
FOLDER 1: C:\Program Files (x86)\Steam/steamapps/common/dont starve together/mods
FOLDER 2: C:\Program Files (x86)\Steam\steamapps\workshop\content\322330

- After doing all of the previous steps, simply resubscribe to all the mods on the steam workshop and boot the game up again. All the mods should be fixed now, and if not, then sorry I wasted your time :c

Thanks to Wally from the official Klei discord server as well as Chesed on the Klei forums website for helping me figure this out back when I was having this issue myself.
Hope this helped anyone having the same problem, and if there's already a forum with this fixed somewhere then I guess I wasted my time.