Kansas City Royals preliminary prospect list

I am now working on the Kansas City Royals Top 20 Prospects list for 2019. I have 69 players under study, listed below. There’s a lot of Grade C here at first glance. Speak up in the comments section if you think there is someone important missing.

Jason Adam, RHP
Humberto Arteaga, INF
Scott Barlow, RHP
Scott Blewett, RHP
Jonathan Bowlan, RHP
Kris Bubic, LHP
D.J. Burt, 2B
Gabriel Cancel, 2B
Eric Cole, OF
Austin Cox, LHP
Garrett Davila, LHP
Yefri Del Rosario, RHP
Donnie Dewees, OF
Nick Dini, C
Samir Duenez, 1B
Nathan Eaton, INF-O
Pedro Fernandez, RHP
Jecksson Flores, 3B
Cam Gallagher, C
Gerson Garabito, RHP
Michael Gigliotti, OF
Ofreidy Gomez, RHP
Foster Griffin, LHP
Kelvin Gutierrez, 3B
Jeison Guzman, SS
Arnaldo Hernandez, RHP
Carlos Hernandez, RHP
Elier Hernandez, OF
Brewer Hicklen, OF
Kyle Isbel, OF
Rubendy Jaquez, 3B
Tyler James, OF
Travis Jones, OF-1B
Jackson Kowar, RHP
Janser Lara, RHP
Khalil Lee, OF
Kevin Lenik, RHP
Nicky Lopez, INF
Richard Lovelady, LHP
Daniel Lynch, LHP
Elvis Luciano, RHP
Andres Machado, RHP
Jose Marquez, 2B
Yunior Marte, RHP
Marcelo Martinez, LHP
Seuly Matias, OF
Erick Mejia, INF-OF
MJ Melendez, C
Yohanse Morel, RHP
Charlie Neuweiler, RHP
Jake Newberry, RHP
Trevor Oaks, RHP
Emilio Ogando, LHP
Blake Perkins, OF
Kort Peterson, OF
Nick Pratto, 1B
Emmanuel Rivera, 3B
Sebastian Rivero, C
Frank Schwindel, 1B
Brady Singer, RHP
Glenn Sparkman, RHP
Bubba Starling, OF
Josh Staumont, RHP
Hunter Strong, OF
Daniel Tillo, LHP
Ramon Torres, INF
Chase Vallot, C
Meibrys Viloria, C
Kyle Zimmer, RHP