I only own drysuit hoods (i.e. short neck, no bib). That's what I use with a wetsuit, too. They will usually overlap the neck of the wetsuit a bit, so it still keeps my neck reasonably warm.
It looks to me like every bibbed hood I've ever tucked into a wetsuit for someone always creates little channels that will let water in and out. Having the bib outside a wetsuit seems absolutely useless as a contributor for staying warm.
I do have a hooded vest, and I have worn that over a wetsuit, on occasion. I think that is the most useful way to add warmth to a wetsuit, if a drysuit hood is not enough.
It looks to me like every bibbed hood I've ever tucked into a wetsuit for someone always creates little channels that will let water in and out. Having the bib outside a wetsuit seems absolutely useless as a contributor for staying warm.
I do have a hooded vest, and I have worn that over a wetsuit, on occasion. I think that is the most useful way to add warmth to a wetsuit, if a drysuit hood is not enough.