NetNewsWire, great open source client on ios, good for mac too.
Though I feed it via tiny tiny rss with the freshrss api plugin so I can have saner filtering and curation before it gets to the reader.
The 'awesome tiny tiny rss' docker image is pretty decent setup for getting it running if you have any interest, though personally I ended up rolling my own static binary using frankenphp somewhat based off their setup. The core dev of tiny tiny rss is a bit, opinionated lets just say.