1. Multiple Different File systems: exFAT, FAT32, and I think ext4?
2. Different Drives: 4 and 64 GB, of which the 4 GB one has a light and doesn't react at all when plugged into my OP8
3. Couldn't test a different OTG adapter because I only have 1 USB-C one, however since it worked on my G6 (and
in the actual booted system) I'm less likely to believe it just doesn't work with my phone
4. all of these (which by the way I can't seem to get ROMs to flash on anything higher than twrp-installer-3.6.0_11-0-instantnoodle.zip)
5. and also after an MSM to 10.5.7 (IN2017) and install of 3.6.0 again