Minecraft dungeon mobs should be added

I think that Minecraft Dungeons has many mobs with great potential that are being Wasted
Mojang should focus on adding mobs from its other games and not adding new invented mobs
The mobs that should be added in the next update are:
-Icy Creeper
There are very few variants of creepers and the ice creeper could be a very good implementation 
-Tropical Slime
The tropical slime could fit very well with the recent implementation of the nautilus,
this new mob could appear in some new marine structure or in some new deep sea biome.
When you kill this mob, it would drop tropical fish and air bubbles that would give you oxygen so that exploration in the sea would be a little bit easier.
-Jungle zombie
The jungle is a biome that hasn't been updated in a long time
so a jungle zombie could give you a new atmosphere
these new zombies would give you a poison effect when attacking you
they would be a new variant of zombies
-Mossy Skeleton
If jungle zombies are added, why not mossy skeletons? 
This new variant of the skeleton would be practically the same as the Bogged
but instead of appearing in the swamp it would appear in the jungle 
and would have a different design
-Frozen Zombie
Just like the jungle 
the snowy biomes are very outdated, 
a new variation of the zombie like this would be very good
since there are Strays in the game, why not a snowy zombie?
-Sunken Skeleton
It would be great if there were a new type of skeletons
that would appear underwater in tropical oceans.