Does anyone know the name of these buttons?

Katuzz

I need the names to change the keybindings under Keyboard Shortcuts, I cant find them at all

Ran_TH

I don't think they're available for shortcut, if at all. But you can set a shortcut to 'Hide Selected State' (H) to hide all mesh and deformer display on canvas.

I invite you to give a vote to this topic I made at least, so they'll know the demand is there
https://community.live2d.com/discussion/1249/more-assignable-keyboard-shortcuts#latest