Currently Mob replacement files in the data file of the mod are either have errors or are missing entirely.

Broken
-Bees: Do not work at all no mobs spawn

Mistyped
-Rabbit: Put as Bunny instead of Rabbit

Missing
-Hoglin
-Piglin
-Piglin Brute
-Zoglin
-Zombified Piglin

Misspelling
-Witch: Hatterene miss spelled

Issue with Missing Mob
-Strider: Due to the chance of spawning with an additional mob on top a Zombified Piglin spawns along side it holding a rod. See Picture.

Put Hoglin in category should be in
Misspelled
Hoglin- Emboar spelled as Embroar. Needs to have first R dropped

Zoglin also in wrong spot should be in
Misspelled
same issue as hoglin with Emboar spelling

After some testing and adding there own files found that these 3 piggy back off of the Hoglin and need to be separated.

-Piglin
-Piglin Brute
-Zoglin

As for Bees the replacement _logic is set to "bees" when set to "simple" the bees work again.

As for Bees the replacement _logic is set to "bees" when set to "simple" the bees work again.

You don't want to do this; it will cause infinitely-spawning bees if somebody encounters a naturally spawning beehive.

Hello and thank you for your bug report!

It has a great deal of information and that's always welcome!

Witches were already known and I'll add that ticket here for convenience tracker.php?p=2&t=19181

Forwarded! Thank you for compiling this list :)

(and I added your notes as well, GamersBrew)