I think this is a very difficult question to answer, but I'd like to try and see how far I get.
Various types of plastic are being recycled for a lot of different purposes. The number of end-products appears to be very large and continues to expand, making any list probably obsolete within one or two years. This makes it difficult to get a complete picture and identify the most-sold products. However, I've checked some sources and came up with a list of products that are made from recycled plastic as well as some usage numbers.
PET: bottles, containers, carpet, clothing, industrial strapping, rope, upholstery fabrics, boat sails, automotive parts, fibrefill for winter jackets and sleeping bags, construction materials. Source: PET Manufacturers in Europe and Wikipedia.
The website Petcore mentions that in 2011 39% of all recovered European PET was used to produce polyester fibers (e.g. clothing and carpets) and 25% is used for packaging (e.g. water or soft drink containers, fruit boxes, household products)
PVC: pipes, window profiles, flooring, foils, traffic cones, hoses. Source: Recovinyl and Wikipedia.
Wikipedia also mentions that the majority of recycled PVC (75%) is used for floors.
HDPE: plastic lumber, tables, roadside curbs, benches, truck cargo liners, trash receptacles, stationery (e.g. rulers) and other durable plastic products.
Personally I suspect PET bottles, containers and carpets, PVC flooring and HDPE furniture are the top 5 most-sold recycled consumer products, but admittedly this is just my own best guess and I cannot back it up with reliable numbers.