Listen I'm gonna make a thing out of this shipp (although I haven't finished the show yet) even if I have to do it all on my own.
So, get ready for some Yasammynn (that being Yaz x Sammy x Brooklynn) headcanons
In terms of jealously, Brooklynn is the most jealous of the three, nothing big tho, she just gets grumpy sometimes.
Speaking of Brooklynn, she loves to just brag nonstop about her two girlfriends online every chance she gets.
Poor Sammy has to constantly keep in check her two workaholic girlfriends, Yaz who literally does not know the meaning of "rest" or "day off", and Brooklynn who constantly loses track of time when editing her videos.
Once Brooklynn stayed up until sunrise and made the error of telling Sammy, she didn't speak to her for a week no matter how hard Brooklynn tried. (She briefly considered recording a video named "I slept 2 whole days so my girlfriend forgives me" but decided against it)
Sammy has the habit of naming baby animals after them. And also using animals as petnames.
Sammy is the most protective of the 3 and won't stand for any disrepect to her girlfriends.
Yaz and B are still quite protective tho and they will get physical with anyone that deserves it.
Brooklynn and Yaz do a lot of playful banter, but it gets to a point that it's like a whole different language for them, like, someone will ask Sammy why are they arguing and she'll just be like "Oh no, they are just flirting"
Feel free to add more! (Please do!)