Thanks, man. Yes, I think we were referring to two similar things, but definitely not the same.
When you said biases, you were referring to clinical, psychological ones, just like you said.
When I said biases, I was referring to those based on interests or an individual's experience. For example, a person might say that she has a bias for black kittens when trying to pick up on at the rescue shelter, because she grew up with one (you probably mentioned that kind of bias in the big list you shared - I just don't know how it's called.)
And I agree with you. Some people thought that Biden "is the most progressive president ever," or held other equally fallacious statements.
Particularly, my "bias," if we can call it that way, is that, at least up until the moment Biden bowed down, the Republicans seemed like a very unified party, whereas the Democrats didn't know what to do with themselves, and they didn't seem to be as unified. For example, Hillary Clinton (in sprite of winning the popular vote) didn't win enough votes because some party members protested by not voting. No unity whatsoever. And my bias, or fear, was that if Biden bowed down, the party would be like little ants scattering around - giving Trump the win.
Thankfully that was not the case in the end, and I happily stand corrected.
Anyway. Thanks. Nice discussion.