I need the bezel side to mate with three versions of this connector.
D38999/26FJ35SN
D38999/26FJ35SA
D38999/26FJ35SB is the third one.
The /26 is the straight plug, so the bezel side is a receptacle: the documented mating halves are D38999/20 (wall-mount flange) and D38999/24 (jam-nut) - the Milnec D38999 overview lists exactly those two as the mating receptacles for the /26 plug. Keep the rest of the part number the same and flip only the contact gender: your plugs are S (sockets), so the receptacles need P (pins). That gives D38999/20FJ35PN or D38999/24FJ35PN for the SN plug, and the same pair ending in PA and PB for the SA and SB versions - the keying letter must match on both halves (the key angles differ per letter, see the shell-keying table on the same page). For commercial cross-references, that page maps the Amphenol equivalents as TV06 for the plug and TVP00 / TVP07 for the two receptacle styles.