Typefaces with alternating characters have a tiny niche market. Because no one else has filled it, I decided I would. So far in 2022 I have released five typeface families into this niche, including the four below.
LoveDuets is similar to YinYangMessages and ButterflyWings in that it fills a single image with two letters. One set of characters fills the left side of a heart and the other set fills the right side. The OpenType feature of Contextual Alternatives does this automatically in applications that support it. There are several typefaces that put letters on hearts, but they all put one letter on one heart. The LoveDuets family has two styles that can be used in layers. It is available from fontspring and myfonts.
I started IMPuzzled a couple years ago but shelved it as I worked on other typefaces. This year I finally finished this family that puts letters on interlocking puzzle pieces. I have found one other font with letters on puzzle pieces, but its pieces are all identical. IMPuzzled has two styles and is available from Fontspring.
Woven was the first typeface I designed intentionally using a shape that tessellates as a framework in which to form letters. Like Woven, Billowed uses the framework of a simple tessellation pattern to form letters. Both Woven and Billowed can create lettering with a wave or ripple both horizontally and vertically. Woven has two styles and Billowed four. I have not seen any other typeface that resembles these faces. Billowed is available here and Woven here.
For the complete catalog of my alternating letter fonts, see here.