Hangouts (now Meet) is better geared towards GSuite orgs where you're already logged into Google since you have to be to access almost all of your other internal company/school resources, including gmail. It also solves the contacts problem since everyone will be in the company directory.
Ah-ha! Google Hangouts Meet is indeed the GSuite video conferencing solution, complemented by Google Hangouts Chat, the GSuite Slack competitor. Google Hangouts is "deprecated" but still alive, and with a plain-old gmail account I don't see an option to use Hangouts Chat nor Hangouts Meet, only Hangouts. As a user in a GSuite org, Chat and Meet exist, and plain-old Hangouts text messages are mirrored in Chat, but the video conferencing is still weirdly separate from Meet.
You do not require a google account at all to join a Meets session, but someone in the session with a valid invite will have to approve your entry.
I test this quite often with incognito tabs to have multiple participants for room setup and testing.