Another possibility is Sun or SGI 13W3 display connector. They were DB25 shaped connectors with 10 regular pins and 3 giant pins for video signals.

True. However, mine were for connecting to modems, so they were definitely only 9 pin serial cables. I didn't have the pleasure of seeing the 13W3 connectors until I was in grad school, and I still think they look weird. It didn't occur to me until today that they were the exact same size/shape as the DB connectors. They were so different that the thought never occurred to me!

Also the NeXT “Megapixel” displays. But note that none of these were compatible.

How would you even count those 3 giant pins? If I recall correctly, they were for coax cables that ran within the main cable. So each of those pins would have a contact for the shield and the conductor.