ethereal account list --usbwallets 5 does not show any accounts of connected Ledger Nano devices.

Tested with:

• Ledger Nano S (with both "legacy" and newer derivation paths, e.g., 44'/60'/0'/0 and 44'/60'/0'/0/0)
• Ledger Nano S Plus (newer derivation path only, e.g., 44'/60'/0'/0/0)