Re: Root arts connected to Daito-ryu and Aikido
Kukishin-ryu bojutsu looks a lot like the aikijo I've seen. In the mid-1990's I learned a little bit from a Gembukan member (Just the first solo bo kata that has all of the kihon strikes in it). A few years later I saw John Goss sensei do some aikijo (31-step kata maybe?) and noticed how there were a few movement patterns that were almost identical. On the Kukishin-ryu website there is a photo of Kuki sensei and Ueshiba sensei together which might make sense.
I think it is good to go over some of the gournd again since there are now better clips than the ones I posted (The Jikishinkage-ryu clip I posted is pretty bad. The one you posted is much better) and you've added ryu that Ueshiba sensei studied as well.