Pingpong, BB, GAIN, STEPGAIN are the main 4 strategies that the bot uses to buy and sell the coins.
The rest are combinations between these 4.
For example:
Pingpong -> bot uses Pingpong to buy; bot uses Pingpong to sell
BB -> bot uses BB to buy; bot uses BB to sell
GAIN -> bot uses GAIN to buy; bot uses GAIN to sell
STEPGAIN -> bot uses STEPGAIN to buy; bot uses STEPGAIN to sell
BBGAIN -> bot uses BB to buy; bot uses GAIN to sell
GAINBB -> bot uses GAIN to buy; bot uses BB to sell
BBSTEPGAIN -> bot uses BB to buy; bot uses STEPGAIN to sell
STEPGAINBB -> bot uses STEPGAIN to buy; bot uses BB to sell
BBPP -> bot uses BB to buy; bot uses Pingpong to sell
PPBB -> bot uses Pingpong to buy; bot uses BB to sell
........................................................
you get the idea.
Now, if you want to understand what each of Pingpong, BB, GAIN and STEPGAIN are really doing you can watch this video:
https://www.youtube.com/watch?v=OufDJvTViLs