I have found typefaces with alternating letter sets to be an almost empty niche in the typeface world and have been trying to fill it. From September into November I worked on five more typefaces that use the OpenType feature of Contextual Alternatives (calt) to automatically alternate letter sets. Unlike many of my past efforts in which the sides of letters snuggle together, these five have vertical sides and the two sets of characters differ from each other on their tops and bottoms.
Bihext is based on a bisected hexagon. It comes in two styles, a filled and an outlined style. It is available from myfonts and fontspring.
The letters of Bannetters are formed on parallelograms, one set sloping downward to the right and the other sloping upward to the right. The result of alternating them is a zigzaggy string of words. Bannetters has two styles, one with squared edges and the other that rounds the outside of letters that are usually curved. It is available from fontspring.