Wanted to provide an update here: we are planning improvements for our photos experience; but don’t have a timetable to share just yet about this particular ask.Chris commented
Concur, this is such a basic function how can they not have it? Rhetorical. Have been researching and apparently there should be a "Rearrange' function under "Sort' but not in my Onedrive. I have taken a load of site photos for work and need to put them in a logical order for the engineers to view but can't because MS don't believe in providing the customer what they want...