With a triumph being such a popular effect in magic I wanted to make it clear that I have done my homework and thoroughly researched my effect. Here's what I gathered
Dai Vernon’s "Triumph" as well as his predisessors De Land, Jordan, Gibson, Loraine
I owe the final display to Frank Everhardt and his "Chicago Opener". This was the feel I wanted to go for to reveal the selections although I know that the use of a stranger card predates the Chicago opener.
Walter E. Gibson’s "Oil and Water" plays a big part in the plot as well.
Mixing together of two decks, one red-backed, one blue, is Annemann's “The Red and Blue Mix-Up” in The Book Without a Name, 1931. It is different in both method and general effect, but the idea is similar.
Larry Becker's “Out of This Universe” in Genii, August 1955, has a similarity he's using the face colors of a single deck. The reds and blacks separate, with two selections the only odd members of each group.
Al Stevenson "Color Separation" using face colors rather than two decks. Appeared in 75 Tricks With a Stripper Deck, of course the method if different.
There are certain aspects that are borrowed from Walter Gibson's “The Instantaneous Reversing Pack" in Twenty New Practical Card Tricks, 1925. The concept borrowed from this probably predates. My direct inspiration for this principle was from Dani Daortiz.
Richard Turner's demonstration of False Shuffling using multiple decks in "Fans, Flourishes, and False Shuffles" by Richard Turner
I believe Ed Marlo mentions a certain aspect of the method in "Faro Systems", also unless I am mistaken Alex Elmsley uses a similar method in his handling of triumph. Danny Garcia uses a similar technique in a color separation that he created.
Mariano Goni has a very similar plot with one deck and different method. I have contacted him and he approved of the release