@Nat-Defriend Hi Nat!
Thanks for asking!
We currently don't have too many Jazz Standards as lessons because we need publishing rights to be able to release arrangements and tabs for songs that are not Public Domain. However, we're working on ways to be able to get the licences to do this.
We have a wonderful version of the beautiful standard "Danny Boy" (or londonderry air), if you'd like to check it out: https://www.proguitar.com/academy/lessons/danny-boy
Hope you have a wonderful day Nat!
Kind regards/Emil from ProGuitar.com