Now that the iPad Mini has moved on to USB type-C in its latest form, OWC strongly hints that one of its latest accessories is an ideal companion for the tablet, considering its new prospects. They include a hub that can expand a connected device's port count by 3 Thunderbolt 4 ports.
https://www.notebookcheck.net/OWC-brings-the-option-of-Thunderbolt-or-SSD-speeds-to-the-new-iPad-Mini-with-its-latest-hubs-and-portable-drives.561677.0.html