Holmes is so long ago that I almost forgot RDJ did anything but MCU stuff 2008-2019, but you’re def right - maybe the best example of a mega hit being a “sling-shot” that helps another movie with the same actor. As for Robbie, I think she helped Quinn more than Quinn helped her - TWOWS feels like one of the definitive American movies of the century, and I think her having a big break there played a big role in her trajectory.
Streaming is iffy imo. I know Extraction was big, but how much of it had to do with it being the first big COVID streaming action film?