Since iOS and macOS are based on the same kernel, a number of these interfaces are addressed in the existing post Surprisingly many network interfaces on macOS: are these legitimate?.
As this is a mobile device, there are some additional interfaces not present in macOS:
ap1
is an Access Point interface. This is if you turn it into a hotspotllw0
is Low Latency WAN link. It is part of the (highly undocumented) SkyWalk subsystemipsecX
are VPN links. While you aren’t using VPN currently, iOS is capable of VPN connectivity and these would be the interfaces usedpdp_ipX
are cellular network interfaces like 5G, LTE, etc.XHC0
is a USB interface likely for tethering