Daniel Burnham said:inverted muscle up should not be included on this list... It is training exercise and is not nearly as hard as the victorian. Same goes for pelican.
There are a ton of answers to this. First of all are we talking strictly strength holds? If that is the case then it is probably victorian.
If we are talking transitions then that is a different story. As we can include a lot of transitions into victorians and presses from crosses.
Why shouldn't a training exercise be included in the discussion? Just because an exercise isn't used in competitions doesn't mean that it can't be hard. Pelican variations, for example, are harder than a few lower grade skills on the Still Rings.
I think the thread is only about exercises used by the GST Community, which spans bent and straight arm holds and dynamic movements.