Sabrent is known for providing high-speed flash storage and while the first-generation cards flew under the radar many photographers looking for CFExpress B deals came across them and have verified that they work in Fujifilm cameras even though they haven’t been officially listed yet.
From what I have been told generation one cards can handle all but the highest resolution video recording modes on the Fujifilm X-H2 line of cameras. I am hopeful that generation two cards will be able to handle the increased demands for video users but I haven’t found any information about them yet.
Generation one cards are pretty affordable
SABRENT Rocket CFX 512GB
SABRENT Rocket CFX 1TB
Generation two cards are fairly priced imo
SABRENT Rocket CFX PRO 512GB
SABRENT Rocket CFX PRO 1TB
SABRENT Rocket CFX PRO 2TB
Readers
SABRENT USB Type C CFexpress Type B Card Reader
SABRENT CFexpress Type B Card Reader with USB 3.2 10Gbps