I'm just showing the sizes most commonly sought by collectors. B3s and B4s are pretty obscure - I don't Holiday has any of either of those sizes.
Japanese speed posters (inserts) are actually not obscure, they are far more common than horizontal B2 posters for example. Speed posters were printed for many movies from all the major studios until the mid 70's and I am selling them regularly through my website so collectors are interested in them (more than in chirashi).
Nakazuri are rarer. I think this is because they are used inside busses and trains, and only movies with considerable advertising budget can afford that (transport media is relatively expensive).
You have also forgotten B-bai posters (two sheets). They are not that common but if you go by collector popularity, they rank pretty high.
Armin