"No love for Rafter? Bruguera?"
Well I was going off your original list. Yes, Rafter should definately be included as one of Pete GS rivals.
As for Bruguera, I dunno, Pete never went through him to win a GS, and had a losing record to him overall:From wikipeida: Bruguera is one of the few players to have a winning record against Sampras, winning three of their five matches: 1–0 on hard court, 2–1 on clay, and 0–1 on carpet