Could just buy what a bodyshop would buy to cut and prep a car...
ebay item 330825987561
then 250814288918 with standard white mop head as per previous
then 160603602281 with a soft buffer head 360487526304
There is no need to clay bar the panel, just wash the car, no need to completely dry it as this works with the compund.
Always mask plastic trims on edges of pannels eg door trims, door handles etc
None of these have fancy names, they are designed for business to business, do not be fooled by marketing nonsense.
Correct application, depending on vehicle paint, age and colour - will make you realise for the most part it is in the skill of the worker and not the product.