The 5G modulation schemes are OFDM-Orthogonal Frequency Division Multiplexing /CP-OFDM, Filter Bank Multi-Carrier (FBMC), Universal Filtered Multi-Carrier (UFMC), Generalized Frequency Division Multiplexing (GFDM), Filtered OFDM (f-OFDM).

CP-OFDM is a great choice for NR.

Rest FQAM & APSK(Amplitude & Phase Shift Keying) are other modulation scheme.

Currently 256QAM is used initially by 3GPP in NR & rest research ongoing for higher QAM.