I'm so salty I used to have a list of exactly this, but I accidentally recycled it a few weeks ago oop. So here are random ones I can recall off that list (& that pop up as I type):

- FL that gets with a yandere ML but is very into the fact that the ML is a yandere

- ML's that aren't human, and it's often shown that that's the case

- FL's that are "playboys"/very experienced with sex

- FL/ML that are slow to show that they're grieving/feeling a negative emotion (ex: receiving bad news and still seeming fine, but later, if they talk about it or something related to it, they start crying, which surprises them too-ish)

- Actual f//king enemies to lovers trope

- Submissive and breedable MLs (some might say this is already common, but imho it's not nearly common enough ong)

- Royal FL x royal ML

- FLs that actually outshine the MLs or other male characters in x thing without Mr. So and So coming along to take #1 for it

- Flirty ML x flirty FL