btw, take a look at my horns mounted vertically, and both the Cornwall Horns and Electrovoice 250 Midrange horn in the Marquis being mounted horizontally (note electrovoice t350’s are vertical in both mine and the Marquis).
The Electrovoice Horns in my speakers have mouth shapes that accomplish the opposite of what they appear, mounted vertically, they limit the vertical dispersion, and specifically deliver wide dispersion.
https://products.electrovoice.com/binary/T350%20EDS.pdf
My midrange is actually two horns on a single driver, called a ’Compound Diffraction Projector’, model 847 CDP on page 26 here. Fisher chose to use it in my Uncle Johnny’s Fisher President II, which I inherited in 1973. Thus my speakers can be considered 4 way, although the crossover is 3 way.
https://www.steampoweredradio.com/pdf/electro%20voice/electro%20voice%201957.pdf