Artist Names not appearing on Music app

So this is something that’s been bothering me for some time. I don’t buy my music from the Apple Store, I download it into Itunes and then sync it to my phone. I manually enter the song title, the artist name, the album name, and the album cover on Itunes, and all of that appears on my Iphone’s Music App except the artist name. Every once in a while I plug my phone to the PC and all of a sudden the artist names appear, but it appears to happen randomly. But the 16 songs I’ve recently added have no artist name, and no matter how many times I connect and disconnect my phone every single day, the artist names still do not appear. So what has to be done for the artist names to show up on my phone? I even updated Itunes and nothing.

I own an updated iPhone 7, by the way.