1st party Watch faces from Garmin have the advantage of being a bit better on battery than most 3rd party watch faces, here are my favs. Show us yours. : r/GarminFenix
UltraSport | Garmin Connect IQ
6x Pro Solar stock face feature request opinion - fēnix 6 Series - Wearables - Garmin Forums
fenix 6 solar digital watch face for "normal" fenix 6 (most of it) - App Ideas - Connect IQ - Garmin Forums