If it’s not formatted in APFS, then you have almost certainly identified your issue. Boy, did I feel silly finding this out.

  • Chewy
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    4 hours ago

    Not natively, as far as I know. NTFS works well on Linux for the most part (unless you need permissions), but macOS natively only supports reading.

    FAT32 is universally well supported, but the partition size limit and 4GB file size limit make it unusable for me.

    Linux filesystems as well as macOS filesystems aren’t supported natively anywhere else, so ExFAT it is.