There are at least 15 artists named RM:
1) South Korean Rapper/Member of BTS
2) Composer/Producer
3) Urban Latin artist also going by Roly
4) Hard Minimal Techno group from Belgium
5) 90s Hip-Hop artist
6) Hip-Hop artist
7) House Musician from Italy
8) French Rapper
9) Techno Musician
10) Industrial Ambience, alias of Rita Mikhael
11) Alias of guitarist Jussi Kousa
12) Member of Impure Ziggurat
13) Russian Musician
14) Swedish Musician
15) UK Rapper .
