As far as I can tell, I have the right version of all of these mods, and I have the core dependencies for them. I have the mods in both the .minecraft mods folder and the server's mods folder.
All of them show signs that they are loaded in game - I see a stat book icon, I see the bauble inventory icon, and all of them with control shortcuts show them in the controls menu. BUT when putting the materials to craft a saddle, craft the stat book (improvable skills), or click the bauble icon, they don't show as craftable or nothing happens. Items are not getting qualities (quality tools). Etc. The only things that do seem to be working are the UI elements from the addons.
I've tried trimming down to fewer mods in case they were conflicting, but even on their own (with just immediate dependencies, they aren't working.