The single rotator beacons are Dominion brand lights. The 4 bulb beacon on the first Monaco is a Signal Stat brand, the second one on the other Monaco is a Sireno brand.
Definitely a LOT going on with their rack setup back then.
I remember an old TV show, had a roof set-up, looked like a 4 bulb Beacon Ray (176?) mounted to the roof, with a cross bar of some sort, (visibar?) mounted in front of it.