ok...I'll play nice.
first, I assume you are only interested in the Yamaguchi-Urban lineage, but in order to find your answer, you may need to look at the much more encompasing Okinawan lineage (after all, Miyagi was Okinawan and had much more influence there than in Japan). Right near you over in Watertown, Mass in fact is Anthony Mirakian...one of the first Americans to bring Okinawan Goju to the US.
The kata you first asked about I've never heard anything in Goju even resemble that name...actually it doesn't even sound Chinese, Okinawan, or Japanese so I didn't even try to guess what you meant. now, from the list of 10 kata you gave you didn't mention Saifa and Seiunchin. that may give a clue.
do you know what kata you are looking for if you see it? or are you searching for just the name at this point?
sidenote: Sanchin kata was not invented by Miyagi, true he changed it from how Higashionna taught it, but he called it by the same name. It's likely Higashionna did not create Sanchin kata either...need to go further back. what you'll find is that nobody is really sure who created Sanchin kata.