Kafta is a mixture with its own texture
The idea
Kafta uses a ground-meat preparation with ingredients mixed through it. Yalla's description includes parsley, onion, tomato and spices. That structure differs from a skewer assembled from whole pieces, even when both dishes are grilled.
A practical next step
Compare kafta with a whole-piece skewer if you want to explore a different meat texture rather than merely a different name.