Gerrie - Strava does not provide the information requested. Not even if you pay for it.
Zwift bills them selves as a platform for serious training. They provide workouts and training plans, but almost nothing to track that training or your fitness level. You seem to be happy to use multiple third party websites, add-on, applications etc. to supplement Zwift. Others of us are less enthusiastic about that approach and would like Zwift to provide more information about our training, directly.
So, yes, I do want Zwift to spend some time developing these features. I really could not care less about gravel bikes, but I sure would like to track my fitness level on my.zwift.com.