I believe this forum is to suggest ideas to steam yes?
so in steam library you can create dynamic collections for certain tags which is very useful, I believe it would be nice to also have an option to sort the games by Publishers dynamically, idk if anyone else does this but it's often easy to remember the developer or publisher of some certain game and this can be useful if you have a lot of games in your library
Now ofc you can do this manually, and I have done this, but it'd be nice to have an auto option