This analysis is only what I see, not necessarily as other would see it.
I
don’t see these videos as end points, rather glimpses of stages where they were
at that time.
As kata SunNuSu
(Sunsu) as the creation of Shimabuku Tatsuo
I am going to show kata which
inspired sections of his creation.
Some are from his
Isshinryu, meaning studies with Kyan and Motobu. As he was a senior to Nakazato
Joen, I am going to use the Shiornji Ryu
kata for the Kyan example of Patsai For the Gojushiho I am going to show the
Nakama Haruku version, his instructor was also a student of Kuan.
For the opening
he began with his own version of Sanchin.
The next session
came from the Kyan form Patsai.
Patsai Shorinji
Gojushiho
Haruku Nakama
demonstrates the kata he learned from Okuhara Bunei student of
Chotoku Kyan.
Useshi (Gojushiho)
begins at 6:40 on the video.
Kusanku – I am
using the Shimabuku 1958 video, which shows the section he used in SunNuSu
I am using the
Hiagonna Morio Seisan Bunkai video
to show a likely
source for the various kicking techniques in the Goju Seisan.
or he man have incorporated the elbow parry
as in Itosu Pinyan San Das as in Matayoshi Ryu.
Again IMO the
rest of the kata represents the ideas of Shimabuku Tatsuo.
1958
early 1960s
1966
Charles Murray
Sunsu in Agena
during his Chinkuchi training 1972
Charles Murray
Sunsu 1980
Charles Murray
Sunsu 2016
Andrew Ware 1980
Young Lee SunNuSu
2012

A personal note I imaging (with no documentation behind this) that Wansu kata was Tatsuo Shimabuku's first effort to expand the kata he learned adding other material he felt expanded his art.