So I have found that this question gets brought up more often than it should, and there has never really been a tutorial for it laid out. So I made this.
This tutorial is for getting rid of the icon nametags so that your CSS looks like this:
Or at least something like this... There are some clones and stuff in there, but you get the picture!
Alright. Here are the steps
1. Open sc_selcharacter
-either the file used for brawlex in the pf/menu/ folder
-or in common5.pac
2. Navigate to MiscData[30]
3. Open AnmChr(NW4R) folder
4. Find MenSelchrFaceA_TopN__0 and open it
5. Select nameEA0
6. Edit the Y translation to 100
7. Repeat for MenSelchrFaceB_TopN__0 through MenSelchrFaceI_TopN__0
So what this essentially does is move the name tags so high up that they appear to be invisible. But in reality they are just hidden off screen because they have been moved up.