I never use the Galaxy Fold in landscape mode when folded... so it makes for me to just lock it to portrait and I forgot about the other routine I have which is AOD set to 'Always Show' when charging (set to 'Tap to Show' when not charging).I might give the portrait mode a try myself as sometimes I get that switch by accident while moving phone
And I do have keep screen awake (when charging) via Developer Settings, not necessarily part of routines. But something I wanted to share.
I don't use one hand mode now but it's also a good option