I like Feeder, even if I think it's use of the back button can be a bit counter-intuitive sometimes.
https://f-droid.org/en/packages/com.nononsenseapps.feeder/
Focus Reader is excellent... https://play.google.com/store/apps/details?id=allen.town.focus.reader
gReader Premium. It is no longer available on the Google Play store, but you can still find it on alternative sites like Aptoid and such, I think.
I've tried LOTS of them. This one is the best, in my opinion. Works with Feedly and other online services, as well as stand alone subscriptions.
Here is the URL to the Play Store as it still shows up for me, but might not for you.
https://play.google.com/store/apps/details?id=com.noinnion.android.greader.reader
Although not an android app, I'd like to mention Firefox' Feedbro add-on. Since Mozilla recently announced (if I'm not wrong here) to make the desktop add-ons available in the mobile version, maybe Feedbro will be part of it?