for right now I only finished making classic sans, I'll finish everyone else later. You could create your own icons if you wanna. when I get to making underfell sans's icons, might make a different icon/border for fell instead of just reusing the white bone one.
icons made by me. (Icons inspired by ULC and UFS) -note: just want to talk about this somewhere. I drew the borders/icons and imported them to scratch, I was going to draw all the icons but while making the bones icon I realized I actually didnt want to (LOL) so I made the rest all on scratch, I'll probably do the same for the rest of the character movesets. I prefer the no text alt because it looks more clean but having text could be helpful