What are these?

[hoover300]

I recognize the Panasonic and the Eureka Whirlwind, but the other two way older ones, I have no idea.

 

[luxflairguy]

The first one is a Hoover Dial a Matic power drive upside down!

 

[dysonman1]

The second one looks like a Classic or an Omega Kirby.

 

[hoover300]

How did I not see that...

I was watching a Eureka Whirlwind commercial before this lol
The second one almost looks like a straight suction, as the nozzle appears flat with a badge/hose port. The wheels seem to be jutting out from the back of the machine, not encased, kinda like a Eureka K. Can't be that though as the bag is on the wrong side, and it has a badge. Maybe something by Birtman?

 

[hoover300]

Waittt

I flipped my screen upside down, I'm almost positive its a 50s Royal. Still unsure about the 4th one, though I doubt I'll ever know for sure as they barely show it.