for breathe, if you turn off reminders, you never see it in the siri watch face, not sure if you use them or not
watch app-> breathe -> breathe reminders -> off
watch app -> photos
doesn't look like you can turn it off.
You could make an album on your phone and call it "watch pics" then only sync that folder, just put no pictures in that album
just found the following, these used to be under the siri face.
it's now in
watch app -> clock --(scroll all the way to the bottom)--> siri face data sources.