I was using Apple’s 29W USB-C power adapter with an Apple official USB-C cable. So, I purchased a JSAUX USB C to USB C 60W Fast Charging Cable to replace Apple’s cable (still using Apple’s power adapter) and these adapters work exactly as advertised. My devices now charge as expected. The quality of these adapters seems excellent.
https://www.amazon.com/Adapter-Convert-Connector-Support-Compatible/dp/B07GH5KJH2

