What are the flowers on this cake called? Or should I ask, what cutters do I need to buy to make these flowers? Any links to cutters would be great!

It looks like there are 3 different types of flowers. I know 1 is a daisy, but what are the other 2?

The big one is the FMM quick rose cutter, used as a cupped flower (35mm).

the other one is some kind of a five-petal flower - I can't remember the name.

FMM 5 petal rose cutter (just do a google search)
These come individually packaged and are different sizes. BE SURE to measure and get the size you want!

5-Petal Flower Veiner--Silicone - 2-pieces, PLUS you need the cutter. You can buy from multiple sources online, but this is a good site with a video:

http://www.winbeckler.com/5-Petal-Blossom-2-Part-Veiner-Silicone-30p5839.htm

No idea. I've never seen the Wilton set.

I have both of the Wilton cutter sets and I think the small one you have should work.