Wrote some things in case someone couldn't google half of these eheh
"Original" - Self-explanatory; draw your character in the hairstyle they typically have!
"Space Buns" - Like pigtails, only in bun-form.
"Pigtails" - Two ponytails, or braids. Think Wendy's.
"Curly/Straight" - if your character has straight hair, make it curly. Curly hair? make it straight! Wavy hair? Um...
"Pixiecut" - short, short hair. If your character normally has a pixiecut, make their hair SUPER LONG!
"Bedhead" - Also fairly self-explanatory. Any form of messy will do!
"Pinned Back" - AKA, show off that FOREHEAD.
"Freebie" - Anything you want, of course!