Thanks for the pictures, Jez. Much obliged.
Man... it hurts my eyes and wrecks my brain having to sort through all these connections having to lock down facts from rumor and old wives tales about some of these helmets. Things get especially ugly when there's a mis-match of parts from various sources with various offerings from one maker. And having to remember which is which.
Grr... I don't think I'll ever be satisfied with the tree, nor will it likely ever have all the helmets listed... as new come every day... and some were one-offs never to be seen again, so partially, I'm limiting things to some of the most common stuff, leaving some stuff out on purpose.
Hope the lines and arrows are easy enough to understand... - when there is an arrow between two boxes it means direction and generation. Top row of helmets is gen1 - Master Casts - second arrow row is gen2 or more. If connected by a tiny link with no arrow it just means they are connected in the same generation from the master and not from each other.
If that makes sense at all.
Maybe I should just stop talking.