What is the safest hero/assembly?

I'm very close to buying a subscription but I hope not every assembly is an obvious cheat. I don't want to end up on reddit or youtube nor do I want to be called out every other game, I'd like something more subtle to slowly increase my MMR. Which assemblies would you say are the least obvious, most "natural" looking ones? Thanks for your time.

if you think people will look at you from your perspective etc just don't use ones that do stuff for you, and only indicate things instead e.g. showmemore, visibilebyenemy and don't automatically respond to them / make them look legit yourself e.g. don't start running away the moment bara charges you