I have some questions regarding your Homographs au (which I totally love btw). (Don't answer if it's too spoilery).
Are the 12! Turtles gonna meet Apes right after they meet the Rise turtles or that's gonna take some time? (I really wonder what would be her reaction). Are the rise turtles going meet Karai? What do the two Aprils think about the fact they both have the same name? (I bet they're going to at least joke about it). Are Apes parents going to meet the 12! Turtles? (I mean the rise turtles consider them family, so i think it would be cute if the 12! Turtles also do) If so, i have this whole scenario in my head that; they make plans to meet up (like dinner or something), maybe it could be in one of the lairs, or in hueso's restaurant or in Apes home (which would be very funny because, imagine 8 turtles +rat going to your house for dinner lol) (maybe add Karai, April, Casey and April's dad), and to make it sweet, make the turtles wear casual clothing. So anyway, they are all gathered there to enjoy some good food, but then they are interupted by a "surprise guest", a villain! (I am between draxum or the foot clan, because it could be seen as ironic do to both having a rather familiar connection with the turtles). But anyways, that's just me and my "fanfiction scenarios" lol. You don't have to do it that way if you don't want, cuz maybe you already have something in mind idk. I just think it would be neat.
Anyway, really love your AU, definitely my favorite! Keep going with it!
Rise April is gonna meet the 12 turtles very soon after the Rise turtles meet them. They might be able to hide things from Rise Splinter but they can't hide a THING from their older sister.
The Rise turtles will meet Karai. Though I'm trying to figure out exactly when I want them to meet.
The Aprils will chalk it up to April and O'Neil being fairly common first and last names at first. After finding out the turtles are related they'll definitely joke about them also being related. (They aren't actually related though.)
It will take a bit but Apes' parents will also meet the 12 fam. Though it wouldn't be the best first impression. (Like a mutant fight interrupts their date night for example.) But they'll get along alright!
I absolutely love your big family dinner idea! It's so cute! There was already gonna be a family dinner for when I eventually write Repairin' the Baron because there was already a family dinner happing there I just gotta add everyone else. But it would be nice to have a not-awkward family dinner at some point.