You’ve been asking “If those 50 lyric websites are undesirable which websites/apps are fair to songwriters?”
First of all if you get your lyrics through Shazam you are using a licensed service. To me Shazam is THE shining example of technology that brings artists and fans together while managing to actually pay songwriters. We wish everyone was like Shazam.
Here are some lyric sites that appear to be licensed and pay songwriters. This is by no means a definitive list. If you are already using these sites? Great. If not consider using these sites: