Reading through all these comments, I seem to be the only one who is experiencing this, but I think the crossposter messes my Reading page.

Two Three users of my circle listed crossposted using the crossposter and I think as a result, they are the only ones appearing on the first page of my reading page, if that makes sense. If I go ?skip=x or view the reading page in using the journal/communities only filter, it seems to kind of fix the problem.