Yes, I have no problem with any type of character combination (for the most part) I am just frustrated by how every character needs to feel so special and different that the entire group is "othered" from the setting itself in a way.
Well, consider this:
The players are
naturally othered from the setting.
The don't know anything about the world unless told. They can't see anything unless you go out of your way to describe it. They have no background in what the setting contains. Hence, being an outsider is a more natural fit for their own lived experience. It maps their personal feelings as a player more closely to their character's feelings within the world.
Further, many folks prefer that feeling of being other, apart. It inherently drives various forms of motivation and conflict. You have to figure out your place in a world you don't fully understand. You may make commitments you later regret, and might want to change. You may have insight that the insiders don't because they lack the perspective, and yet you may benefit from learning this new culture's ways. Etc. Point being, there are a lot of "stories" (in a
very loose sense of the word "stories") that are driven by being a stranger in a strange land.
I've seen (from you and others) the repeated emphasis on choosing something "just to be different". I think there's...rather a lot to unpack there. More or less, that implies that you think player characters should be obliged to be
not different, obliged to be as "normal" as possible, unless they have a really good reason. Where does this expectation come from? Adventurers are, after all, inherently weirdos. Old-school, you are diving into murder-holes for fun and profit, mostly profit. You are definitionally abnormal by the standards of the society in which you live.
If you see others as
exclusively adopting various options to...for lack of a better term, "show off" like some kind of juvenile stunt, then of course you'll never really have much respect for the choice. If you want to feel differently about it, you have to be willing to look for reasonable reasons to do something you personally don't like and don't want to do. That will always be challenging.