There's a lot of Vkook/Taekook, Yoonmin, Namjin, Jikook, and Vhope

In kpop fandom?
Well, definitely not 2min (I wouldn't even say 2min is the most shipped pairing in Shinee world, Jongkey usually takes that place from what I've seen).

But i don't think there's a couple who are the most shipped in KPOP? Like, if there is it's probably one of the big ships in either EXO or BTS. But idk. If you're looking for a pairing to write based on popularity of the ship, I'd say skip that step and write who you're comfortable with.

Definitely 2min as in shinee taemin and shinee Minho

there's a lot , kaisoo hunhan vkook vmin jikook

I think it's SVT meanie