Creative trends are entertaining to watch because they showcase just how quick mobile advertisers are to follow what they see their competitors doing.
I think the canonical example here actually isn't the current weird Homescapes / Matchington Mansion ads that totally misrepresent gameplay: those are egregious but they are actually pre-dated by ads that FunPlus was running for King of Avalon that showcased 3D action gameplay that looks nothing like the game experience of King of Avalon:
In any case, you can watch these fast-follow trends evolve in real time just by scanning Instagram. I am working on a project in the Health and Fitness space right now and there are a few noteworthy trends that every advertiser seems to have picked up on:
1) Abs with accompanying exercises:
2) Some sort of exercise calendar:
You'll start to see this very unique / iconic imagery for one app and then suddenly every app in the space is using some variant of it within a week or so.