The bojutsu of Funakoshi passai [sho], with variations based on further research of the karate kata, including examining Mutsu Mizuho's example of Funakoshi passai [sho] illustrated in Karate Kenpo (1933).
The Funakoshi Okinawan Karate Kenpo Kenkyukai (Research Society & Study Group) is dedicated to studying and researching, in particular, Master Gichin Funakoshi's Okinawan Shorin-ryu karate kenpo teachings. For authoritativeness, Master Gichin Funakoshi's old Okinawan karate, his later developed karate, Master Gigo Funakoshi's karate, the developments of Shoto-kai, & every other karate kenpo lineage, are all considered.
Now, Master Gichin Funakoshi had a chance
encounter with Master Sueyoshi, the bojutsu expert who devised Sueyoshi
no kon. Master Funakoshi explains that they ended up discussing karate
and the art of stick fighting, but he did not state anything about
having learnt Sueyoshi no kon (comprising Shuji no kon and Choun no kon, not a kata called Sueyoshi no kon or Soeishi no kon) as a result, sooner or later. Perhaps he
did, but reading that he did learn the kata is not valid, since there
is no actual evidence to suggest that he was taught by Master Sueyoshi.
Surely he would have thought to record such a fact while he was noting
their "meeting", and as he mentioned Master Sueyoshi founding his own
school of bojutsu. 