DA_13, please allow me to compliment you on doing a very excellent job of work with these info-boxes; would you object if I were to use "Ophelia Wyatt Mitchel" in any future biographical articles on "Simple Mitch" himself? (I rather like the name, as it fits neatly with the tone one associates with CS President Mitchel - a man possessed with an occasionally overpowering sense of his own Dignity).
If one may suggest a small improvement to the information given above, I would like to suggest that you switch out Theodore G. Bilbo as Vice President; from what I can gather about the man, he's too blatantly a race-baiting populist and scandal-ridden to suit President Mitchel (indeed I believe Bilbo has been identified as a Freedom Party member in this thread already, which makes sense given his membership of the KKK in Our Own timeline; I tend to equate membership of the KKK in our History with membership of the Freedom Party in timeline-191), who is far more likely to prefer a more distinguished nonentity of unimpeachable respectability - if only to reassure Admirers that his deeply questionable candidacy in 1927 is not an outright criminal enterprise!
I've been looking through the Democratic candidates in 1928 (our timeline) and the most plausible alternative would appear to be Senator Pat Harrison - another native of Mississippi, but one who appears to have been the candidate of the Upper Classes and a more respectable figure than Bilbo (with whom he would appear to have nourished a Rivalry). He is also noted as having been a most loquacious man, which would undoubtedly help sell the less-articulate Mitchel.
https://en.wikipedia.org/wiki/Pat_Harrison - more information may be found at the other end of this link.
N.B. This pick is intended to compliment your own idea of Vice-President Bilbo; I am not yet certain who my own "draft pick" for Mitchel's VP will be, but the front-runners are Mr Richard C. Watts of South Carolina (a justice of the South Carolina Supreme Court in our own timeline) and Mr Duncan U. Fletcher of Florida (the longest-serving senator in that State's history and a man apparently trusted by President Wilson with a number of positions).
Both are older men, both East Coast and neither seems likely to overshadow Mitchel* - I am inclined to prefer Mr Fletcher, since his connection with Wilson in Our History allows us to spin him as an olive branch to the "Wilson Whigs" (the more progressive wing of the Party) from the "Stonewall Whigs" (the social and financial conservatives assembled around Mitchel), but one acceptable to Mitchel by dint of his seniority and their shared service in the CS Senate.
*My take on Mitchel is a man who would want a competent subordinate ready to step into his place, but might place a little too much emphasis on subordination at times (not quite to the extent of surrounding himself with Yes-men by choice).
In regards to Ophelia Wyatt Mitchel, her name is actually a reference to Hattie Ophelia Wyatt Caraway, the first woman to be elected to the United States senate in our timelime. She represented Arkansas, Burton Mitchel's home states.