Soft Brake Pedal After New pads and rotor

Air.
I know you've bled them out several times but I'm still 99% sure air. I rebuild all my brake parts myself and do brakes for others on a regular basis, I have a bit of time on these systems.
Could be though that the retraction of the piston in the caliper could have rolled the seal. If this happens though there should be fluid from behind the dust seal and should be visible.

 

Haven't read the other posts yet so I'm not sure of anyone advised it, but also bleed your rear brakes along with the front since the mc went dry.

 

There's a thread on this : https://www.tacomaworld.com/threads/spongy-brakes-solved.412108/