I've never seen one, I would like to see one having orgasms with no aneros in sight, does anyone of one?
Seriously, what would you expect to see?
It's all in the mind! There simply isn't anything connected with an A-less orgasm that could make a visual image. I simply don't understand how any video could show what is going on, unless you are into interpretation of brainwaves from an MRI scan.
Almost as interesting as watching haircuts. As Pommie notes, 80% of the action is inside the brain.
If you went hands-on with the man having the session, you might detect an excursion in heart rate and breathing. The body's 'essential tremor' might emerge (looks like a minor case of Parkinson's Disease). There may be fluttering eyelids. The skin may flush (red) and you would detect a veil of sweat.
He may 'gulp' and moan.