We don't have synonyms for modern greats yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are modern greeks.
(n) :
(historical, education) A degree course at the University of Oxford comprising philosophy, politics, and economics, introduced in the 1920s as a modern alternative to classics or "greats".
(n) :
(historical, education) A degree course at the University of Oxford comprising philosophy, politics, and economics, introduced in the 1920s as a modern alternative to classics or "greats".