The definition of high or low action is/can be very subjective.
e.g. check out Ola Englund's vid on setting string height and action:
I think he sets his low E ~1.8mm at the 12th fret. Low enough for Ola and hes likes it this way/fits his playing style.
I have the low E at ~1.2mm (12th) and the high e at ~0.8-1mm (12th) on my guitars....but that's what works for me
Truth is though, my low string height without buzz/rattle is a the result of a combination of (imho important) things.
Fist and foremost (and that gets you 85% there) is a totally perfect fret level/dress. Take your most favorite guitar to a luthier and let him do a fret job - you'll be surprised! (I was and all my guitars either got complete new frets or had their frets dressed/levelled and polished).
After the fret dress/level I could relly set my neck almost straight.
I play 11-50 (D'Addario Balanced Tension) in Standard E tuning. The polished frets make them feel like 10s when bending (EVO Gold or Stainless Steel frets even more so). The thicker/heaver strings don't oscillate as much as thinner strings (lower action; straighter neck).
I use fairly thick/stiff picks (Dunlop Jazz III 2.0, Dunlop Ultex Jazz III, Gravity Sunrise Mini 1.5 or 2mm) which helped my right hand dynamics. I can riff through Holy Wars or hit big open chords with humogeous sound and sustain and NO buzz.
Important: this is just my subjective approach (YMMV) but it definitely gives me a relaxed und uber-comfy playing experience and a huge left-hand comfort.
At the end of the day: You WILL sound best with the setup/strings/pickups/amp/gain settings/cab/...... that you FEEL most comfortable on. If it feels comfy/good = I play [positive adjective]. Otherwise: Shit in -> Shit out