Don't visit here much because people seem very confused and not very scientific or rational.
Lucky for you, I'm here today for a couple of secs to clear things up, since the forum is a mess of bad info and wrong thinking.
I have done a basic investigation and it seems to me (imho) the most likely situation is as follows:
The main cheating teams are UAE and Jumbo-Visma where almost all riders are juiced. Jumbo started the recent cycle of cheating with Dumoulin at least as far back as his Worlds win, UAE started with uber-alien Pogacar.
Quick Step were cheating with Alaphilippe but not anyone lese.
Sky/Ineos were not quite cheating so badly but unethical use of TUEs, bullying culture and unpleasantly large budget are not a good look (This was all discovered by a UK Government miilion-pounds funded investigation, so you can have good faith in this compared to rumours and conspirarcy theories spread by children all over the place. (and the Salbutamol controversy was solved correctly, with good science (even if it required expensive lawyers))
Bahrain are trying to get big time but have been frustrated by very annoying police raids, so have yet to enter really big league.
That's it really, not much else of note in last decade, apart from the odd Olympic medal or two...
Hope that helps you confused people - you really do deserve the likes of WvA, Pogacar, Vingegaard, Alaphilippe,, enjoy the racing...