I most certainly don’t know enough about axes to help with the design. I have done a lot of wood splitting in the past, and what I think we’re good axes, were a lot of fun to use - almost negates the hard labor of splitting a lot of wood.
The axes that Justin mentioned would be a good place to look. John Neeman of Autine has been on my list for a number of years, and seems to be dedicated to making high quality edged tools.
Gransfors Bruks is fairly popular, seemingly high quality, and well liked. Justin mentioned he has axes by both of these makers.
Liam Hoffman of Hoffman Blacksmithing seems all the rage right now. He seems a skilled and driven, and popular maker, and is continuously trying to improve his processes. For what it’s worth, he is/was the youngest Forged in Fire champion. His popularity led to some years long delivery times, after significant deposits. I believe he has, or is close to getting through that and has instituted a “ten axes per week” presale, with an approximate ten month delivery time, and close to 1/3 price deposit. The weekly sale sells out rapidly.
Probably more verbiage than helpful, but hope there is something to be had in there.
I’m in, by the way. Mike
Here’s a little article that might be fun to read.
https://www.fieldandstream.com/story/outdoor-gear/the-best-axes-ever/