I used Akoya (that's the one going around the boarder and I absolutely LOVE it!), Tripoli (very hard to get all the triangles the same and spaced correctly, which is why I have them colored in solid instead of a design like I started to. Definately need more practice) I did read that it helps to think of them as circles with 6 triangles creating a circle and 3 triangles creates half a circle and that helped a lot! Then there is Kecko (the weave one with lines. Love it!), and finally Knightsbridge.
Zentangle Challenge #21 is P - I - J and I used Pokeroot (the little mushroom or cherry looking things in the bottom left corner), Puf (which is the one I used most on this tile, very fun!), Intersect (the funny looking stars), and then Jax.