I have several that I need you guys to help me ID over the next few days. That way I know what 'weeds'

from my yard to transplant & what to keep mowed down. City codes here are a nuisance so if I want to keep anything, I need to transplant it.
So anyway, here's #1. I really like this plant & it also comes in pink & lavender colored around here. One name for it may be 'Creeping Jenny'. I need to know what it is so I can find out whether I can use it as ground cover or whether it's considered an invasive weed that I have to get rid of.
Of course, I would also love to know if it's medicinal.
I live in the Denver area which is high mountain prairie desert:
Plant #1