Sleep Waveform Question

[DustyDreams]

Sorry if this has been answered, I did read the Optimizing Therapy guide and a bit of googling... I'm curious about, what I think is, normal breathing waveforms, or maybe they are not normal? Maybe can add to a FAQ or something . I am using a nasal mask (N20), currently on loaner/demo AirCurve 10 VAuto from sleep clinic while they order a AirCurve 11 VAuto for me, and all pictures I post below have zero leak, zero flow limit, zero snoring, no reported events near by, (at least to my knowledge) side sleeping, and all events using the same zoom (max up arrow).


I see this in my data, based on the "Optimizing Therapy - Snoring Waveforms" I think this correlates perfectly to "Normal Flow Morphology - Nasal":
   

I sometimes see the following, more elongated version, I assume this is normal and just correlates with a different sleep stage, like REM (or maybe position, aka ?on my back?):
   

I sometimes see this more triangle version and curious what it correlates to as well, I assume it correlates to some type of normal breathing since its not being flagged?:
   


Thanks for helping me understand the above, love the forums.

[DustyDreams]

I sometimes see this combo version too, where inhale looks normal (like Q1 above) but exhale is more triangle (like Q3 above):