"My teacher hasn't added or amended any of the kata"
If so then were in a bit of a pickle then are we not?
Those kata, under those names don't exsist in any style of Goju I am aware of.
Nor can I find them in various Shorin, Uechi, etc groups.
Not saying they don't exist, just that I can't find any reference to them--under those names anyway.
Maybe we can narrow it down this way--
Whom taught your teacher?
And whom taught HIS teacher?
Maybe if we trace it back we might find out more than we know now.
Just a thought.
Something else that might help--
What are the other kata in your system?
Maybe we can figure something out by a process of elimination.
I did battle with ignorance today.......and ignorance won.