I have them all identified on my Ancestry.com "glvaughn" tree with the icon for the Mormon Pioneer Trail having lifted it from the Federal Register (OK, don't tell anybody at my work - but at least it's not for commercial trademark exploitation).
And here's the list. You may note no "Vaughns" except that Elinor Jenkins was a widow going by Eleanor Vaughan when she came in 1856. So I even have that.
My Pioneer Names follow with links to the Mormon Pioneer Overland Travel database which is frequently updated with new information and sources: