Where did all of these "couple teams" come from?

Well,I Actully Came Up with 'Team Random'.
I Don't Who Came Up with the Other Ones.

随意 actually. So, if i not mistaken, I made "Obivious,Fabulous,Marvelous"
Which I follow a simple recipe : Show that contain 3 guys would make a team couple
For example : GG - Chuck,Nate,Dan
你 just have to get Chuck to be with someone,Nate to be with someone, and Dan to be with someone.
Cherry,Nair,Derena In that 你 follow a simple rule, NO BRO-SIS AND NO MATCH.
Chenny,Nenny,Danessa Jenny could only be with one person in a triangle.

The name we just make it up, For people to start calling it, 你 need to make a pick, 或者 a spot.
Hope I helped you.
Thanks

P/S now i'm actually 阅读 your question.
So like i said, 显示 that contain three guys normaly make a Team.
And all three guys have to be with someone.
It's clear that THE ENDGAME was made before Trifecta. Because they happen first.
Now Trifecta is ..kinda 更多 popular, obviously because they happen after so...
And i think Endgame was the first group couple ever (saw somewhere on youtobe ) yay !