Dont have a bone in this race but IMO Kriems "unpopular" but has a vocal minority pushing her.
She has this weird otome self insert fanbase of shippers.
They even made fun of it this summer.

Shes the type to do well in polls because her vocal fans will spam vote for her but in reality her release will be pretty muted because the vast majority of people dont care about her at all.
Not in the /fgog/ "shes married so IM LITERALLY BEING NTRD", but in shes really fucking bland and boring.
If you want a really minor proof of that you can look at the art shes gotten. Despite having a literal meme swimsuit in the shark hoodie which should have guaranteed a bunch of random drawings she got absolutely bodied by Homete and even Lip.

Im personally just annoyed by Crane getting a swimsuit. Shes so unpopular they had to make it notCrane rather than the real one who acts completely different than her normal self.
Also dont care for shiki but its more of resentment from fucking summer ciel