Hiking is not a filtering option on GCM to list activities?

I found an older post about this but it doesn't allow replies anymore.

On GCM, if I want to dig back into my history to find a past hike, I have to do: More -> Activities  and there is a list of activity types which doesn't include Hiking. I have to click All Activities and then scroll back through everything to try to find it.

I don't understand why there are so many activity types yet they cannot include Hiking?  And then there is Walking but it doesn't include hikes if you select it either.

I think this list should be dynamic and reflect the activity types that a user actually uses, so they can sift through their own history.