I appreciate the speculations, they're fun interactions. I don't want to mislead, though; I play very few of the games I feature soundtracks for, and since my focus is the often the music regardless, I tend to refer to the production as a whole in both contexts. I'm pretty sure the only proper fighting game I've even touched is Touhou 15.5, assuming that even counts; I am a fan of Rivals of Aether, though.
I've done two features on Guilty Gear: Guilty Gear XX on 04/14/21 (14/04/21) and Guilty Gear Strive on 04/12/22 (12/04/22). The latter was what I was referring to in the latest post, in addition to the Killer Instinct feature from 07/19/23 (19/07/23). The linking factor was vocal tracks; you can figure out the rest.
The month-long series features of late have been an opportunity to force myself into becoming familiar with iconic franchise soundtracks that I just wasn't around to discover when they first came out. It's one thing to look into a single soundtrack, but something else entirely to choose from several related soundtracks that somewhat depend upon familiarity with each other for full appreciation. Last year I did Legend of Zelda, Mega Man, and Pokemon, and thus far this year I've done Kirby; in future I hope to cover Castlevania and Sonic (since I'm only familiar with select entries of those series), as well as Metroid and potentially Fire Emblem. But none of those are the plan for next month. I've mentioned in the past my struggle with SNES soundtracks, and this is especially true for one of the most iconic soundtracks from that era. I'll leave it at that.