The statusbar icon is fairly unclear; something more unique would be ideal

[ELLIOTTCABLE]

The "human head, with a checkmark" really doesn't indicate at all that it's something to do with spell-checking, Grammarly, or etc.

Unfortunately, Grammarly's logo is also not very amenable to being a recognizable statusbar-icon. Perhaps something unique and new? Or at least "spelling related"?

My suggestion (which isn't very creative either, but at least doesn't compete with the other four(!!!) statusbar icons I have that have a circular arrow ⤾) is a small box with "ABC" in it.

Or, if you're feeling ambitious, perhaps the current spellchecking language-code, i.e. [US] or [AU] or something?