I have Type 2b wavy hair. Brushed out it's 2a, scrunched up 2c. But always 2.
The main types are:
1) Straight
2) Wavy
3) Curly
4) Kinky/Coily
Here are various charts. Keep in mind, celeb examples might be highly processed hair but the gist is clear. I didn't find examples for men but you can still participate, bet you've had it long enough to see at least once EDIT: I gave examples below.
(4C is missing here)
A closer look to differentiate non-straight types (gay hair? ):
Maybe someone uses the Mizani Natural Hair key as well so I leave it here: