Non-Ragdoll Kitten for Current Kitten

Hi there!

We recently got a male ragdoll kitten (3 months old) from a breeder and wanted to adopt a second kitten from a shelter.

Does anyone have experience bringing in a non-ragdoll with your current ragdoll? Would love to hear your experiences.

From what I understand, ragdolls are a bit more docile so should we make sure the new kitten is more shy as well?

Also, our breeder mentioned this could be a little risky given the ragdolls are more prone to diseases that might not affect a shelter cat. Is this a major concern?