The knobs are only there for manual cars. They are gone in model year 2022 for automatic cars. Reason being on auto cars you have the MFC (multi function controler) by the shifter that has a volume knob as well as the big knob/jog for selections. On manuals you do not get the MFC (as you shift you hit it especially if you wear a watch or bracelets), so it has been replaced with a bin (love that little bin). The auto does have a phone bin that is so well placed and the MFC is awesome, you can do so much with it, it spoils you.
as far as charge ports:
CT5-V Blackwing auto and manual have A and C and 12Volt inside arm rest. C and 12V for back passengers
CT4-V Blackwing manual has all three inside arm rest and a C and 12V for rear pssengers (console same as CT5-V Blackwing)
CT4-V Blackwing Auto has all three inside arm rest but only a 12V for rear passengers, no C type USB. I have an adapter with two Type As for when I get cars without UsBs and my kids use the adapter for their ipads, its a small one that inserts and has two type As works fine and something like $5.
Hope this helps and take it easy on me please
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All views and opinions expressed here are my own and not those of Cadillc and GM.