Of course in the one pot that has both easily visible, the one that blooms is taking the longest to form its' blooms. You can see the light green chunk of the one that blooms, compared to the darker, less pointed leaves of the other one.
The one that blooms is the same color on the back, the other is purplish on the back.
Finally getting good pics this year but have been convinced for a while these are 2 different plants. The one I've always thought was C. repens is the one that doesn't bloom. I've had it before in OH also, the darker green, less pointed leaf one, always labeled C. repens. C. repens usually disappears for winter, I think though it may just be lost under leaves, not totally sure since it's taken a while to get some decent patches of it going the way I constantly take cuttings. This blooming plant stays evergreen, in a pot or in the ground, the past couple winters anyway. I would love to know what the other one is.