hi John,
Are you sure you see DShot 125? I think it is OneShot125 you see there.
In addition to PWM and PWMSync, there are:
- OneShot (125, 42)
- MultiShot
- DShot (not supported in 16.09, you need next (*) for it)
These are (very) different protocols, and not just "variation" of "Shot" mode, despite the name.
(*) next is not something that you need to wait "next year" or anything like that, it is just generic version name for current development version.