Estimate of the number of people in that latter group? Nick Beckstead is probably the cleanest example of an extreme longtermist, but even he has taken the GWWC pledge. Similarly, Nick Bostrom argues in a pretty longtermist way and is neither vegan nor has taken the pledge, but I don’t see any particular evidence that he has a morality that an average person would call evil. Toby Ord and Will MacAskill are both visibly mundanely extra-super-ethical despite their longtermist views.