Apple wanted control over both its device ports and the accessories that connected to them. After strangling developers, USB-C gives it a chance to reboot.
Apple begrudgingly confirms a USB-C future for iPhones
Apple's new M1-powered iPad Pros have Thunderbolt, 5G and a 'Liquid Retina XDR display' for the 12.9 model: Digital Photography Review
Here's why Apple's iPad Pro dumped Lightning for USB-C
Why Apple Won't Change the iPhone From Lightning to USB-C
iPad Pro could use much faster 29W charging, if Apple allows USB 3 Lightning cables
Apple should switch the iPhone to USB-C if it really wants to help the environment - The Verge
Here's why Apple's iPad Pro dumped Lightning for USB-C
Why does Apple still use lightning connectors? - Quora
USB-C vs Lightning Cables - The Voltage Drop
How to Navigate Apple's Shift From Lightning to USB-C - The New York Times
One cable to charge them all – What Apple's jump to USB-C means for customers
Apple to put USB-C connectors in iPhones to comply with EU rules, iPhone
Apple Might Finally Dump Its Proprietary Lightning Connector in 2019