15v4 spare keys - Colemak layout

Hi! What is the model of the keys on the Librem 15v4? I am using the Colemak alternative keyboard layout and would like to move my keys around to match what they actually type.

Specifically, I’d like an F and a J without the little bumps they have on a default QWERTY keyboard, and also a T and an N with the bumps.

But for that I’d need to know which model keys would fit my 15v4. Are they equivalent to keys from some other, more well-known brands?