Hi,
pretty basic style , really.
Noticed he actually started with an existing style , probably so that he wouldn’t have to explain how to do the ntr and ntt settings.
Never seen that explained on a Yamaha clip, there again haven’t really bothered looking.
Understood the korg system, Yamaha appears to be similar, but not identical.

Think one would get better results using style assembly function if they can find a track that works for what one wants.
At least the track gets copied across with the correct settings .
Also one can use tracks with mega voices and the guitar mode type tracks. I don’t believe one could record mega voice tracks in the keyboard itself .