Well you might not necessarily want to memorize games from the 1600s considering play has evolved a lot since then, but anything shusaku+ is fair.
It would certainly be easier to do these older games, considering modern play is heavily fight-focused. But you can never go wrong with Shusaku, Go Seigen, Kitani Minoru, Takagawa Kaku, Sakata Eio, Ishida Yoshio, Cho Chikun, Lee ChangHo…