IMO Opacifica's Class and Aspect theory is the most robust towards maintaining Homestuck's metanarrative of... meta-narratives. They go in DEPTH here on their AO3: https://archiveofourown.org/works/26869882 (they also have their Aspect theory there too in the same series, which is also some of my favorite).

The Classes are based on different relationships the characters can have with their Aspect, but in an organic way that I think is a lot more specific holistic than a lot of single word/phrase descriptions of like. "Heirs embody their aspect" (which always made me WTF).

The Aspects imo are even more interesting in how they serve the overall narrative and are also from a psychoanalytical perspective.

I really recommend reading the essays!!!!