Sorry if the title isn't clear. Some keyboards will put a pit/valley thing on certain keys to put some extra space between the key and its neighbor. A common one is on Caps lock, presumably so you don't accidentally press it when you want to press "A". I think I have also seen it on the "Enter" key. Is there a word for this type of key, or the characteristic?
From reading https://deskthority.net/wiki/Caps_lock the term step seems promising, so perhaps stepped keycaps or keycaps with a step?
I don't know how "official" the term is but that website has an amazing amount of information on keyboards and keycaps and seems as authoritative as I can find.
And from same page ...
It usually occupies a prominent place between Tab, Shift and A, and is easily engaged by mistake when reaching for A. To avoid this mistake, many keyboards have a stepped caps lock keycap that places a gap between caps lock and the adjacent letter key.