Memory Card Guru has completed their memory card testing report for the Canon EOS RP. They have tested 60 memory cards and have ranked them based on burst speed and they also show memory card read speed.
Top 5 Memory Cards for the Canon EOS RP
Angelbird AV Pro SD // Burst Speed: 171MB/s Read Speed: 304MB/s
Toshiba Exceria Pro N501 // Burst Speed: 171MB/s Read Speed: 275MB/s
Toshiba Exceria Pro N502 // Burst Speed: 169MB/s Read Speed: 274MB/s
SanDisk Extreme Pro 300 // Burst Speed: 167MB/s Read Speed: 309MB/s
Lexar Professional 2000x // Burst Speed: 164MB/s Read Speed: 309MB/s
Best Value Memory Cards for the Canon EOS RP...