Boston, Cleveland, New York, Brooklyn, Atlanta, Miami, Denver (he and Joker always seem to cancel each other out by absolutely torching each other), Memphis (Adams is out), Phoenix, the Clippers, the Lakers.
Pretty much the only teams I'd consider WORSE matchups for Sabonis than the Warriors are the Sixers (Embiid), the Bucks (Brook and Giannis), and the T-Wolves (for whatever reason Gobert is his Kryptonite).