I am sticking to semi- sloping full crowns because open crowns, flat and full sloping ones have no appeal to me.

Ishiwata 555-Oval 28/20
There is also a 565 with a straighter line from fork blade to crown. Looks like a Cinelli MC.
Ishiwata Catalog pdf on the bottom of this post.

The Bocamas:
VeloBase.com - View Single Frame Part the upper has 27.5/20mm sizes for forklegs and the lower has old 28.5/16.5mm sizes.
Cinelli MCA

Cinelli MR:145 grs 28.5/16.5

Cinelli MC:153grs 27/20

Everest

This is the Haden Europa I have on a custom build from 1980: 27/20 27.5/20 29/16

Zeus:the middle is 29/16 145 gr., on the right is 27.5/ 20 140 gr.

The 2 on the right are Davis

Columbus