I haven't formalized it, but it would be easy to put them in a spreadsheet.
Yes, there are likely groupings. For example, now that I can sleep through the night, stand in a grocery line, do cognitive tasks, and sit through a meal, I don't track them anymore.
These days, I'm measuring by my ability to work, exercise, do housework, stand, and socialize, all of which I still have significant challenges with, along with the number of hours of treatment or self-care per week and amount of PEM I get, and naps needed.