> similar-to-me bias (I like you because you're me!).

My first boss in the 90s eventually told me why he hired me.

"I assume that everybody at their first job with a CS degree have more or less the same level of technical competence [which is not much IMHO] so I ask which are the last books they have read. You told me a few, I usually get none, so I hired you because I hoped that talking with you would be interesting."

At least a similar-to-me bias builds a pleasing work environment because of homogeneity.