Hey Kenny,
Those sideplates are inlet - the flat ones are inlet flush, and the ones with raised detail are inlet to the edge of that detail (2/3rds the way?). The bump was a carry over from English military arms. Most the original English fowlers I've handled haven't had that swell, but there are several in the book that do - you wouldn't be wrong either way to do so. Remember that the swell is very subtle - even on a Bess I have the stock only swells just shy of 1/16" on either side.
-Eric