Jerboa and Connect do that with account switching too.
Lately I’ve been leaving different accounts in different apps to reduce confusion. Having the same user name on the different instances is a bit confusing with the account switcher.
Because sometimes I prefer to not have my feed full of LoTR memes, cats, boobs, no poop challenges etc. And some times I don’t want the news breaking up my cats, boobs, no poop challenges etc. and I haven’t found a better way to do that in Lemmy.