It looks like Pittsburgh's jersey ad is no longer a patch, but sewn right into the fabric of the jersey. They seem to be the only team that's made this change.
mlb patch on sleeve sponsership|TikTok Search
Giants announce first ever jersey patch sponsor – KNBR
Giants become first team in MLB to wear Pride colors on the field - The Washington Post
Giants add Cruise logo to jersey amid SF-robotaxis tension, Transit
Pavlovic] The Giants announced that they'll now have jersey patches. They're sponsored by Cruise, a driverless car company: : r/baseball
The San Francisco Giants will be sponsored by Cruise, an autonomous vehicle company under investigation for safety concerns - McCovey Chronicles
Cruise Sponsorship Patch Now Part of Giants' Jerseys
The San Francisco Giants will be sponsored by Cruise, an autonomous vehicle company under investigation for safety concerns - McCovey Chronicles
Cruise Transport Topics
Giants add Cruise logo to jersey amid SF-robotaxis tension, Transit
San Francisco Giants set sail with Cruise for jersey patch sponsorship - SportsPro
Cruise is partnering with the Giants for a new jersey logo : r/SFGiants