Technically polish doesn't remove any paint it just fills very minute scratches like swirl marks from compounding. It won't fill scratches from wet sanding unless you finished with something like 10,000 grit paper which you're not going to find in normal retail shops. 2000 grit is probably the finest you'll get in a retail shop.
I always wet sand with 1200 first and then quickly change to 1500. Most decent compounds claim to remove 1200 grit but that assumes you sand perfectly and the edge of your sandpaper isn't dragging deeper marks. I find the Meguiars always gets rid of 1500 grit for me.
You can get all-in-one products but I've never been totally happy with any of them.
Also I use a dual action polishing machine and maybe because I've been doing it a while I don't get swirl marks. For me the only reason I use polish is because it helps sealants and waxes adhere stronger. For small jobs and on guitars I use a mini DA adapter that attaches to a normal drill also from Meguiars. I think they discontinued unfortunately but you might still find them in some shops.