Here's a breakdown of the state of the bracket:
1. There are 21 conference auto bid teams that would not have made the tournament as an at-large, including a potential 22nd in Cincinnati if they win today. That will cover the 6 16 seeds (2 play in games), 4 15 seeds, 4 14 seeds, 4 13 seeds, and 3-4 12 seeds.
2. On the lower end we have the conference tournament Cinderellas in lower conferences like Mount St. Mary's, Appalachian State, Hartford, Drexel, Texas Southern and Norfolk State , your 16 seeds.
3. Beyond them it's your slightly better one-bid conference champs like Iona, Oral Roberts, Eastern Washington, and Abilene Christian, your likely 15 seeds. Above them are your solid one-bid conference champions like Grand Canyon, Ohio, UNC Greensboro, Cleveland State, Morehead State, North Texas, Colgate, UC Santa Barbara and Liberty, your low 12 and 13-14 seeds.
4. Above them are your major conference upset champions, Oregon State, Georgetown, and possibly Cincinnati as other 12 seeds.
5. On the top end of the bracket, Gonzaga is your 100% #1 seed. Baylor is about 90% the #2 overall 1 seed, Illinois is more than likely the #3 1 seed and Michigan is at worst the #4 1 seed.
6. Since Ohio State is in the FTT final and Iowa won their first round games, they are likely 2 seeds, along with Alabama who is a sure thing on the #2 line for making the SEC final.
7. After that, it gets a little more fuzzy with a litany of Big 12 teams that are all very similar (Texas, Oklahoma State, Kansas, West Virginia), along with Houston who can still win their conference championship. Toss in Purdue, Virginia, Florida State, Creighton and those are your likely 3-4-5 seeds.
8. 6-11 seeds are effectively splitting hairs overall, but obviously some teams are much safer than others.