Yeah, a lot of what I was coming up with when searching for drivers involved the ili9225, I just wasn't sure how similar it might be. So as far as any drivers for this actual part goes, it seems I'm just SOL.
And yeah, the raspberry pi might be limited with its headers (I'm honestly not sure, ive still been trying to just get the thing working) but this other MCU I have has somewhere between 60-80 headers in total, so I figured I may be able to make something work with that. But since I have nothing to base it off of, that certainly sets me back a bit.
I have managed to locate the st7775 data sheets, it's just beyond my current understanding at the moment, but if I can begin by deciphering it then that should give me some basis to work from (and perhaps something I can turn into an Arduino library/driver later on down the road as well, provided the voltage levels are correct). Thanks!