Although my first proposal on 3:1 and 5:1 was found incorrect, I cannot resist commenting on the "Macca-system".
The confusing point here is the 90 degree turn to put blocks inside the boom. If you straighten out the system, you find a 4:1 compund system and a 2:1 cascade. Total = 8:1 (Or 1:8 if you are the boom).
For cascades, you cannot simply count number of line segments.

Seriously:
May I propose that you publish mainsheet setups that you really like here. This would be most useful to all of us.

Macca has provided an exellent example.

Stein