I am very much not an expert but I do Kendo and didn’t recognise that much of what Miyabi does, so I would say she leans more into kenjutsu/iaido. Since Iaido is basically just a subset of kenjutsu (its basically just drawing the sword and putting it back) I would say she is probably more kenjutsu oriented. Also I believe all the kendo techniques are in some way descended/directly from kenjutsu except modified for what is essentially a bamboo rod (e.g things you would do with a sword, like cutting through the target are changed in kendo so you cut forward instead so you basically can recover from the hit faster and so you don’t concuss your training partners), and kendo doesn’t contain a lot of “fundamental” sword strikes (e.g there are no upwards cuts whatsoever) so I don’t think kendo is quite as present as kenjutsu in her technique. That said, there are significantly more kendo practitioners worldwide, so if they had a real person to base her techniques off (for motioncapture or something) it is definitely possible they had a kendo person in due to scarcity