My company uses Google meets and it works flawlessly with more than 100 people in a call. Automatic integration with GSuite and Chrome box are an added bonus.
Does it have the advanced features present in Zoom? At my $WORKPLACE we use the Spotlight feature so to ensure everyone is watching the right person (fairly important as we have lots of Deaf people and they all need to be watching the person signing) and Breakouts to set up discussion groups. While we don't have 100+ participants, we do have up to 25 active participants with lots of turn-taking (and not e.g. 100 watching 1 stream). Other platforms we tried didn't have these and made it difficult for participants especially those who aren't great with tech. Also helps Zoom seems to work well with video—other platforms we tried were great for audio so fine if you just need to listen to people but woeful with video making it a no go for meetings involving people who use sign language.