I am reluctant to add "{Shawnee Heritage}" to profiles because I think the average person is going to read that as "This person is of Shawnee heritage" as opposed to "This person's facts and existence are disputed because they originate in a widely-criticized genealogy called 'Shawnee Heritage'."
You're moving far faster than I am. I've so far only cut Oceana. From what I can trace, the main proponent of her existence is Don Greene. Carlyle Hinshaw's website says that Noel Schutz, Greene's collaborator, has also weighed in:
"Schutz notes that Cornstalk’s ‘siblings were Nonhelema ( "grenadier Squaw"; Catherine), Silverheels, and Nimwha. Some say his father was Paxinosa, ‘Hard Striker’ (not the father of Tecumseh as some think in error, but a well-known Pennsylvania Shawnee chief). Some of his children that have been mentioned are Oceano, Elinipso (Elinipisco, Elinispisco Nipseko), Aracroma (The Aracroma legend, married Boiling Baker), Greenbrier (name from the Greenbrier area of the Kanawha River?), Bluesky, Wynepuechiska (Peter), Wissecapoway, Piaserka (The Wolf). Other names mentioned are Mary, Elizabeth, Esther, Peter, Nern-Pe-Nes-Quah. Keigh-taugh-quah. Elizabeth See was a white captive Cornstalk married prior to her repatriation. Cornstalk is said to have been born in western Pennsylvania at least by 1720, but some say 1708 or 1710, and moved with his family when he was about 10 to Ohio."
(Apologies again for the ethnic slur, which is in the original.)
This is another case where it reads as someone hedging -- it says she's been "mentioned," not that she's been traced or confirmed. Hinshaw neither endorses nor disproves the list, at least not on that page. My guess is that this is where we got the large list of children from.
Also, if the date on Hinshaw's website is correct, then I believe Schutz's writing above predates the publication of Shawnee Heritage -- but it also means her existence still ultimately ties back to the writers of that book.
There is another proposed descendant of Oceana who keeps getting mentioned in scattered places, a Charles R. Stackpole. (He's also mentioned on her Geni profile.) The problem is that I can't figure out why he's being quoted. He has posted occasionally on genealogy message boards during the past decade, but other Shawnee genealogists have questioned his conclusions. As far as I can tell, he's a well-intentioned but perhaps not reliable correspondent? It would be nice if we could figure out where he got his info.
Of note: Stackpole says Oceana married and had children. Other Shawnee researchers have called that into question; here is one example. Greene lists her as "died unmarried" at age 18, which is very different from Stackpole's assertion that she died at 101. And again, no sources given by either.
With this many questions, I'm comfortable cutting her from her parents on Geni unless/until someone can firm up her info and relationships. We can always re-connect her if something develops.