'Paprika' Achillea is the one I know - all the rest are unidentified. At one point I added one that was called 'Appleblossom' but I have some doubts as to the accuracy of its name.
How to Propagate Achillea
Propagating achillea (yarrow) is about as easy as maintaining it. Just divide a small section during the growing season and plant it where you want it (including a pot). The nice thing about division is that you can go ahead and plant the new plants right into the ground without waiting for rooting to start - it's already done! There very little need to try stem cuttings since the plants divide so well.

