Valve stem seals

Thanks for all the replies.
I geuss I'm making a mtn out of a mole hill.
Heres what I have to work with.
None of these are for machined guides
Only the Felpro seals, and the intake seals on the far right are the kind that goes over the guide.
The red ones are for intake, & exhaust they also have a spring retainer on them. They do not stay on the guides.
The Comp seals are longer than the others, and do not stay over the guides.
Thanks for all the replies, as I am not an engine guy, and get cornfused.
Dave