BuyFromEU

Take a look at myksuite by infomaniak.

It's basically a gmail/google workspace replacement of sorts. A personal account is free and gives you a decent amount of email space, online drive, online office with document sharing, calendars, etc.

And you can choose @etik.com as email domain, which should be cool for a nonprofit.

The basic account is free, should do everything you need and then some. I do not know whether there are restrictions that would forbid using the free account for a nonprofit. If that were the case, and you like the product, a pro-account is 1.58€/month per user, so less than 6.5€/month for your team.

Perhaps an EU based Notion alternative like https://anytype.io/

Depends how long is that list but wouldn't a spreadsheet be enough to keep that kind of records? You could save it in a privacy respecting cloud too. And it wouldn't need a powerful computer to be accessed.

LibreOffice is a Libre software (meaning its free as in free beer and free as in freedom: you can use however you wish) that comes with an alternative to Microsoft Word and one to Microsoft Excel. It works on Mac, Windows and Linux.

I have limited needs but it perfectly replaced Word and Excel for my use case.

If you don't mind using Google products there is also their free (as in free beer) online alternative Google Docs and and Google Sheets, which work in most browsers.

Literally anything is better than SharePoint. If you used sticky notes and copied individual notes by hand for giving out to coworkers that would be more useful, easy, and functional than SharePoint. They'd be more reliable and searching through them would actually work!

I would suggest you try out https://cryptpad.fr/

ethercalc may be what you need as long as there is no personal information stored. No login, everybody possessing the link can open it. Its based in the usa, code on github, infected by microslop, so not for me.
office.eu looks like the feature, no pricing available yet. Faq promises a free plan

Is self hosting an option?