Take care of yourself.
MewAnd which pokemon use taunt in competitive play really?
Magma Storm Heatran
use other stuff if you want I guess
have you ever heard of the term "role compression"? For the examples you gave, Landorus-T (let's say you're running the defensive variant) is a Stealth Rock setter, a Knock Off user, an Earthquake switch-in, a defensive pivot, etc while Clefable (maybe Calm Mind/Magic Guard with Thunder Wave) is a win condition, a speed control, a Dragon counter, and so on.And talking about a OU being more diverse is a laugh. People are always going to use clefable and landorus therian, and other top tier pokemon. If people use the same top tier pokemon in competitive, I guess there isnt much diversity is there?
You might think that this restricts teambuilding (for instance you don't like having to use Landorus-T) but on the contrary, it frees it up. Now you don't have to squeeze in a Flying-type to switch in on Excadrill and shoehorn in a Stealth Rock setter because Landorus-T will do both for you, allowing you to use dumb stuff from the lower ranks of the VR as you beat people who are bad at the game.