Must be, as they're so different, but I don't know the names - sorry.

I have got some info - the second one should be Echinacea
"Kim Knee High", but will wait for more suggestions.

Kim Knee Lo? Sorry, K. As Spritz says they will have different names but I don't know either.

They both look like straight cultivars of E.purpurea. The yellow, orange and red ones tend to be hybrids with E.paradoxa.

Thank you very much Buddlejagar for your information!

Today I have got the name of this variety of Echinacea purpurea. It is "After Midnight" sort. Thank you to all.