A trusted source told GNA Sports that Appiah named Leicester City’s Schlupp among the ten selected defenders of the 30 players in the list expected to be prune to 23 for the competition.
Frimpong is among 12 midfielders expected to begin preparations on May 26, ahead of the World Cup; Ghana’s third in succession.
According to the source, Aduana Stars goalkeeper, Stephen Adams remains the only locally-based player in the team that includes four goalkeepers.
Also named in the squad is Italian Serie A side, Sassoulos Yussif Raman Chipsah. Making a return after months of absence are Anthony Annan and Isaac Vorsah.
Appiah is said to have presented the list to the Ghana Football Association (GFA) ahead of the official submission to the global body, Federation of International Football Association (FIFA) next month.
Ghana is housed in Group G alongside, USA, Germany and Portugal.
Adam Kwarasey, Daniel Agyei, Fatua Dauda and Stephen Adams
Samuel Inkoom, Daniel Opare, Jonathan Mensah, Baba Rahman, Harrison Afful, Jeff Schulpp, John Boye, Isaac Vorsah, Jerry Akaminko and Rashid Sumaila
Sulley Muntari, Mubarak Wakaso, Mohammed Rabui, Michael Essien, Emmanuel Agyemang Badu, Anthony Annan, Yusif Raman Chipsah, Andre Ayew, Kwadjo Asamoah, Christian Astu, Emmanuel Frimpong and Albert Adoma
Jordan Ayew, Abdul Majeed Warris, Asamoah Gyan, Kevin Prince Boateng.