I haven’t looked into your example, or any wah-type algorithm options.
You might find the Resonator or Sculpt examples below useful:
https://www.eventideaudio.com/community/forum/stompboxes/resonator-otherworldly-wah-filter-sweeps
https://www.eventideaudio.com/community/forum/stompboxes/sculpting-some-spectral-panning-fx