Chicago White Sox preliminary prospect grade breakdown

I am moving forward with the Chicago White Sox Top 20 prospects list for 2018. My first pass through the grades yielded the following results:

Grade A: Zero
Grade A-: Two (both have a Grade A case and may end up there)
Grade B+: Four (at least one of them may end up at A-)
Grade B: Two
Grade B-: Six
Grade C+: 16
Grade C: A bunch

The first run is conservative and there are some guys in each category who might wind up a notch higher on the scale. The names:

Spencer Adams, RHP
Micker Adolfo, OF
Luis Alexander Basabe, OF
Joel Booker, OF
Aaron Bummer, LHP
Zack Burdi, RHP
Jake Burger, 3B
Alex Call OF
Dylan Cease, RHP
Brian Clark, LHP
Ian Clarkin, LHP
Zack Collins, C
Ryan Cordell, OF
Luis Curbelo, INF
Tyler Danish, RHP
Craig Dedelow, OF
Dane Dunning, RHP
Jameson Fisher, OF
Bernardo Flores, LHP
Ti’Quan Forbes, 3B
Jace Fry, LHP
Carson Fulmer, RHP
Willy Garcia, OF
Casey Gillaspie, 1B
Jordan Guerrero, LHP
Luis Gonzalez, OF
Ian Hamilton, RHP
Alec Hansen, RHP
Lincoln Henzman, RHP
Eloy Jimenez, OF
Tyler Johnson, RHP
Michael Kopech, RHP
Kyle Kubat, LHP
Louie Lechich, LHP
Patrick Leonard, 3B-OF
Luis Martinez, RHP
Kade McClure, RHP
Danny Mendick, SS
Yermin Mercedes, C
Amado Nunez, 3B
Daniel Palka, OF
John Parke, LHP
Tito Polo, OF
A.J. Puckett RHP
Luis Robert, OF
Jose Rondon, INF
Matt Rose, 1B-3B
Jose Ruiz, RHP
Blake Rutherford, OF
Gavin Sheets, 1B
Evan Skoug, C
Yosmer Solorzano, RHP
Lenyn Sosa, SS
Jordan Stephens, RHP
Logan Taylor, OF
Charlie Tilson, OF
Thyago Vieria, RHP
Connor Walsh, RHP
Yeyson Yrizarri, INF
Justin Yurchak, 1B-DH
Seby Zavala, C