He used the Drive-By last night. It might have been the first big move of the match. He used it against KO too, pretty sure. He still occasionally uses that one arm powerbomb, depending on the opponent's offense.
However, I do agree to an extent. I remember that around 2016 he used to do a sweeeeeeeeeeeeeeeeeeet Black Tiger Bomb which he dropped after some time. That man was also on random RAW episodes doing La Magistrals, Single Leg Crabs and what not, and all that shit looked cool.
At this point, it's not even if he *can* do more moves, is if it's needed. Roman never was a guy whose matches relied on a huge amount of moves - see his first match against Lesnar or against Bryan - and sadly, when he is on a run that people are reacting to basically NOTHING for 5 minutes straight, I dunno if he feels the need to mix things up.