The first needs my cuddles about 4-5 times per day or he starts crying if i reject him more than once.
The second needs her belly rubs - only from me, noone else is allowed to, even tho she loves it - if i don't react, she gives me soft love bites in my arm (sooo cute!)
The third does not care where on me she is, as long as she can give kisses; only issue is she likes to tread milk a lot, and her claws are like scalpels, but i endure for her.
The fourth grew up in the wild, and took quite a while to warm to humans, but now he speaks to me when he wants his ears rubbed and his head scritched; no normal petting allowed yet, but i looks more like that is simply too intense for him.

Every single one shows their love in their way.