OooooOOOOOoooooooohhhhh, pick me
I know what the middle one is (I think)......
I have one in my garden too.
I have two varieties... one is white, it's pretty big, maybe 2.5 feet at its peak, the other, like yours, is purplish and is only about a foot high - I think it's a mini version.
So far it has survived my black thumb and the wrath of my marauding herd of chickens
Looks like it might be spreading this year. Definitely a hardy little plant.