This is not what you are looking for, but i had a similar situation and ended up using the “actor” tags
meshActor = unreal.EditorLevelLibrary.spawn_actor_from_class(unreal.StaticMeshActor, [0,0,0], rotation=[0,0,0])
meshActor.tags = "words","2","foo bar"]
print(meshActor.tags)
print(meshActor.tags[1])