A lot of the sufferfest videos are single or two zone workouts (9 hammers is 6 vo2 hammers and 3 threshold hammers, if I recall correctly), a very dark place is all vo2 more fluctuation within said zone but still only a few zones. Half is easy and revolver are both straightforward interval sessions.
Sufferfest puts more effort into being entertaining and somewhat less structured than TR. Both have race simulation type workouts. Although they are more prevalent in SF, I can’t remember ever seeing one come up in a TR plan (now that I looked it up, I kind of want to try blood +3, although I’m sure I’d regret it).