Mabel Chapter 1
Diverges at "Wow/Wtf Mabel!"

Ending 1/2 "Mabel's Price"   - C2 V1/2
Must choose NEVER or 100 to get C3 V1/2 E2/2
Wow > Any until end
Ending 2/2 "Mabel not selling herself again"  - C2 V2/2
Wtf Mabel! > Any until end
Mabel Chapter 2

Both are entirely linear, all choices are (seemingly) inconsequential.

Variant 1/2

Ending 1/1 "Mabel's Escort Career" - C3 V1/2

Variant 2/2

Ending 1/1  "Mabel's Cosplay Career" - C3 V2/2

Mabel Chapter 3

Variant 1/2
If you chose NEVER or 100 in C1 then it diverges at "No sex with clients/Alright...".

Ending 1/2 "Mabel's Sexwork"
Alright... > Any until end
Ending 2/2 "Mabel's Promise"
Keep cuck points negative or else you get 1/2.
No sex with clients > top choice until end for maxixum negative cuck points.

Variant 2/2 
Diverges at "Yes, delete it/Keep it". Choices prior to that are purely your preference.

Ending 1/2 "Mabel's Fan Service"
Keep it > any until end
Ending 2/2 "Simple Happiness"
Delete it > Any until end