A few specific, pikmin-esque questions

How would i make a mob be damaged by water and play a specific sound while taking damage by it, and make a mob be damaged by powered redstone, redstone blocks and redstone torches? ontop of this, how would i go about making them play a special animation while taking water damage, and add a special walk and idle animation set for when they carry items, which i would also like help with figuring out how they would carry a item dropped on the ground to a chest, and if it cant find one it goes to the player? kinda like a allay copper golem hopper hybrid. im also on 2024.4 and am using neoforge 1.21.1. i wanted to make a mod because im a fan of pikmin and pretty decent at modeling.