I seem to remember connecting my iPad or iPhone to my MacBook Pro laptop using a Lightning cable. From there I was able to let the iOS device access the internet via the Mac’s existing WiFi connection.
[internet]↔[WiFi]↔[MacBook]↔[Lightning cable]↔[iOS device]
I vaguely recall using
System Preferences >
Internet Sharing. But I see only
Thunderbolt Bridge and
Bluetooth PAN items, nothing for over the Lightning cable.
If the Lightning cable cannot be made to work, might the
Bluetooth PAN item let the iOS devices us a wireless Bluetooth connection to use the Mac’s internet connection?
Using macOS Sierra, and iOS 11.