I’ve just spent a few minutes trying to find the split nine patches and I think I’ve got it.
Wait, no, I don’t have it. I count six squares that are split, one square that is not, and two rectangles that are not split and not squares. That does not to me say split nine patch.
I guess it does follow the pattern as seen on this website (that is full of clickbait ads) so I guess it’s a legit knitted interpretation of the split nine patch pattern.