I just ran the stats by lineups and that's not as clear as you might think(the part about Exum's stats being so much dependent on Gobert's presence). Here's what the stats show(some are in limited minutes and the stats might have some noise and not be as meaningful):
-Dante is part of ALL 3 of our best defensive lineups and in 4 of the best 6 defensive lineups.
-Rudy and Dante are part of 3 of the best 6 defensive teams together.
-Dante is part of our best defensive line up at DRat of 81.5(25 minutes) without Rudy being part of that lineup.
Trey and Enes are a brutal combination in defense - pretty much all our worst defensive teams include them. They are in a relatively good defensive lineup(5th best) when Rudy is on the floor.
https://stats.nba.com/league/lineups/#!/advanced/?CF=TEAM_ABBREVIATION*E*UTA&sort=DEF_RATING&dir=1