I’m not too keen on patreon, the last time I looked they take a percentage of every donation, and lean on ‘creators’ heavily to maximise their income. I’ve had really good results with https://ko-fi.com, but (I think like patreon) it’s geared more towards individuals than groups.
There is liberapay which has worked well for covering server costs for me in the past. It’s a simple option, basically a front-end for paypal, you receive the money directly (although of course paypal takes its own fee). People sign up to donate x amount every week for x weeks, but in practice that whole donation comes through immediately, in one lump sum.
It’s very easy for free/open source projects to get set up with open collective:
I haven’t used it myself but it looks very interesting and could fit well. I think they also take a cut but it looks legit.