I've been working on this lately and I must say this is the first time I've seen "working on the highest priority items at the expense of lower priority items" framed as procrastination. In the literature it's always (that I've seen) the opposite- and that's the view I have.

Type C isn't a procrastinator- it's someone who practices good time management.

Now, maybe the way the person assigns priorities is wholly selfish. Maybe they assign the highest priorities to things that benefit themselves the most, and don't tend to think that things that benefit others deserve their effort as much.

But that's a different trait from procrastination.

Those people aren't procrastinators. They're assholes.