I'm in a lot of different gaming groups, with some overlapping of players.
I'm running two savage worlds games (both Last Parsec, both in a shared Last Parsec setting, but different campaign focuses). I'm using Zoom to run these games, with the players and I all rolling our dice and saying what the results are. This is pretty common for how I'm running things, these are high trust groups, who were willing to use a house ruled initiative system. I'm also running a Shadowrun 5e game and a homebrew Ars Magica Modern using Cthulhu Now rules with the Ars Magica magic system converted to BRP as well, both on Zoom.
I have a third savage worlds game I'm running (homebrewed Deadlands Japan) using roll20 for dice and cards for initiative, with our communications over Zoom. Roll20 being a little clunky is what lead me away from using it in my other Savage Worlds games. But, I prefer Roll20 over Foundry and Fantasy Grounds, as a player and for just a die/card tool at least.
I'm in a fourth savage worlds I'm playing in, 50 Fathoms, that is probably 2-3 sessions from completion. That game is also on roll20, but we will be moving to Foundry for the followup game, Dungeon of the Mad Mage in 5e. The GM of that game vastly prefers the GM tools on Foundry over Roll20. Again, we use Zoom for chat.
I'm also playing in a Delta Green campaign, one more time, on Zoom.
So, I'm playing and running a lot of Savage Worlds. It's not my favorite system - but it is light enough to work really well over Zoom. Similarly both BRP and Delta Green are simple percentile die systems that work really well over Zoom. Shadowrun is working less well - pausing to check a rule is always painful, but it feels to me even more so on a Zoom call.