The bodyshops I've visited seem to prefer 3M paint renovation stuff, which can go to 3000 grit equivalent. I've had good results with AG Bodyshop 02B (2000 grit) or 03B (1200 grit) followed by 01B hard polish. I do not like AG super resin polish as it has chalk filler to hide small scratches but leaves white residue in all nooks and crevices, so I use 01B then AG high definition wax over that.
If you try 02B use a damp microfibre cloth or pad and a water spray to keep the area damp, go carefully (stay away from edges unless masked off) and check frequently.