More hostile mobs common across all biomes

There need to be more new mobs like zombies or skeletons that are hostile and across all biomes, with different variants like the bogged with different effects. The only mobs like this are zombies, skeletons, spiders, creepers, etc. Which are getting to easy to beat even on hard mode, especially for long time players. The warden is cool, but it is rare and is boss-like, we need more normal common mobs across all biomes with slight variants that are unique in their own way but still extremely similar to the base mob, like the husk and zombie. The new mobs need to be completely new and different, and common like zombies. You could implement it into the next big update to Java and bedrock. If you don't want people to be forced into it, you could have a setting to enable or disable the new mobs when creating the world.