Kirby Heritage
The one on the left is a Kirby Heritage from 1981-1984. It looks like you're missing the power cord. I already have one, and in my humble opinion, it is one of the worst performing models Kirby ever produced. This is the last model to feature an Emptor (trap door underneath the dirt bag), which got scratched after Kirby changed to only disposable bags on their machines. If yours has the disposable bag upgrade, it has compromised airflow and thereby poorer performance than the typical Kirby. Probably not worth much, especially in that condition with the missing cord.
Not sure about the other one, but it kinda looks like a Royal. I don't know much about that brand. Good luck.