Yep, I have some tropes that can easily lean toward problematic, BUT I try to navigate them so that they're as healthy as they can be!
My pairings could easily lead toward unequal power dynamics, however I tackle them in a number of ways.
Monster x Human:
It’s easy for a monster to completely dominate an unskilled human and result in an unequal pairing. So in my story, the monster needs the human to live. He is essentially a parasite that requires his host, the MC, healthy so that he himself can exist. And so they form a reciprocal relationship where the human has his protection, and he borrows her life force. He does get domineering though, but it's part of his character development to ease off his possessive feelings. The human also isn't totally passive in all this either and she finds her own ways to gain the upper-hand over him.
There are large age gaps between my MC (25) and her human love interests (42 and 58 respectively). I avoid power imbalances by having the MC always be the one to initiate and give her full agency. The love interests don’t pressure her to do anything physical or romantic. She chooses to do so. To avoid any further iffiness, neither of the guys knew her before she was 18.
In short, I'm always wary of power balances, since that is a pretty big gripe a lot of people have when it comes to couples. So I will usually have the one that is more likely to be taken advantage of be very active in determining their future events.