St. Louis Cardinals preliminary prospect grade breakdown

I am working on the St. Louis Cardinals Top 20 Prospects list for 2018. The first run through the grades gives the following result:

Grade A: Zero
Grade A-: Zero
Grade B+: Three
Grade B: Seven
Grade B-: Eight
Grade C+: 22
Grade C: A bunch

There might be a slight skew upward with the final grades since a couple of the Bs might be B+ and a few B- might be B (say that really fast five times).

Names:

Randy Arozarena, OF
Harrison Bader, OF
Landon Beck, RHP
Fabian Blanco, LHP
Tyler Bray, RHP
Dylan Carlson, OF
Tommy Edman, SS
Jacob Evans, LHP
Junior Fernandez, RHP
Jack Flaherty, RHP
Adolis Garcia, OF
Austin Gomber, LHP
Derian Gonzalez, RHP
Conner Greene, RHP
Jordan Hicks, RHP
Ryan Helsley, RHP
Dakota Hudson, RHP
Scott Hurst, OF
Zach Jackson, C
Connor Jones, RHP
Carson Kelly, C
Andrew Knizner, C
Corey Littrell, LHP
Josh Lucas, RHP
Jonathan Machado, OF
Jeremy Martinez, C
Mike Mayers, RHP
Yeison Medina, RHP
Alex Mejia, INF
Evan Mendoza, 3B
Hector Mendoza, RHP
Oscar Mercardo, OF
Elihuris Montero, 3B
Andrew Morales, RHP
Yairo Munoz, INF
Tyler O’Neill, OF
Mike O’Reilly, RHP
Dennis Ortega, RHP
Johan Oviedo, RHP
Ian Oxnevad, LHP
Delvin Perez, SS
Chase Pinder, OF
Nick Plummer, OF
Daniel Poncedeleon, RHP
Rangel Ravelo, 1B
Alex Reyes, RHP
Arturo Reyes, RHP
Kramer Robertson, INF
Julio Rodriguez, C
Angel Rondon, RHP
Max Schrock, 2B
Darren Seferina, 2B
Alvaro Seijas, RHP
Ryan Sherriff, LHP
Edmundo Sosa, SS
Stefan Trosclair, 1B-2B
Breyvic Valera, 2B
Patrick Wisdom, 3B
Jake Woodford, RHP
J.B. Woodman, OF
Juan Yepez, 3B
Wadye Ynfante, OF
Andy Young, INF