Need help identifying these bit angles

I still consider myself quite new to this. I don’t get how the angles for bits are calculated or determined. I bought this set off Amazon:
12 Pieces CNC Router V Bits, 1/8"… Amazon.com

I’m having trouble figuring out which bit is which angle, nevermind that there are supposed to be 6 different bits and it appears that I’ve only got 5 different ones.

The smaller number the pointier it is. So if the values are correct on the amazon page, then 15 degrees would be the pointiest/sharpest and go from there, but be aware that wrongfully entering the info in e.g. Estlcam might give you some wrong/weird behavior when doing some carvings

Right, that’s why I’m trying to at least ballpark them first.

Crude sketch, but should be like this (90º on left, 45º on right):

So the smaller the angle, the longer and pointier it is.

Hard to tell from the picture with the shadows, but I think maybe you have your 15º and 20º bits mixed together. 30º at bottom right. 90º at top right, and other 2 are hard to tell with the shadows

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