Bitless bridle options? (poll pressure)

[Pigeon]

Are there any good bitless bridles that don't have as much poll pressure as a hackamore?

 

[Meowy Catkin]

A Sidepull or Scawbrig might be worth looking at.

 

[Dizzy socks]

Well a flower hackamore has changeable levels of severity, so could maybe be worth having a look?

 

[iconique]

Not tried it but the micklem training bridle can apparently be used bitless in 3 ways?