Rank the Classic Ben 10 Aliens

[skips-the-great]

From most to least favorite, rank the original 10 aliens. It's torturous for me now that I'm rewatching, but this is my ranking:

1. Stinkfly
2. XLR8
3. Wildmutt
4. Ripjaws
5. Four Arms
6. Ghostfreak
7. Heatblast
8. Diamondhead
9. Upgrade
10. Grey Matter

The ones in bold can be switched around. My bottom two are definitively Upgrade and Grey Matter, I just don't like them as much as the rest. Heatblast and Diamondhead are Ben's most average aliens, Ghostfreak was unique but didn't get nearly as much exposure as he should have as a Ben 10 alien IMO, Four Arms is his most classic one IMO, Ripjaws was the most special IMO, Wildmutt was just nice, XLR8 is my personal favorite but Stinkfly is Ben's definitive alien IMO (alongside Four Arms) and my 2nd favorite anyway.

Feel free to leave thoughts on my ranking, ask questions and don't forget to give your own list!