Okay,
The dust was nagging at me, and the L0P and HDS U60 did not have their names visible, so I gave each light a quick wipe and rotated the L0 and U60 and then took one more snap. Same order as before:
(Fenix L0P, Exolion, Orb Raw, Amilite Neo, Fenix L1T and HDS Ultimate 60)
GID O-Rings...