@nyaasar most of the people attending are adventurers, some are rank B or A, but most are rank C or less, so far, most adventurers he meets are commoners/low social status, the staff that will be working under him will also be attending the party, they are also commoners/low social status, from the expected 29 people, only 12 can be considered nobles/high status.
There is a bit of everything on the party.