I was specifically discussing utility sized and larger tractors as that is often the smallest tractor where the manufacturer actually makes the entire tractor including the engine. All of Deere's current utility tractors have either the 3029 or 4045 engine, both of which are wet-sleeve engines. Kubota's and CNH/FPT's websites have fairly little information, from elsewhere it looks like the FPT four-cylinders are dry sleeve (F34, N45) as well as Kubota's V3800 and larger engines used in their utility tractors appear to be dry sleeve engines. I can't find anything on the 3 cylinder FPT R22 in the NH Workmaster 50/60/70 and CaseIH Farmall 50A/60A/70A. With older tractors, most New Generation and later Deeres are sleeved, so were tractors using Perkins and Continental engines, many Internationals, and some Cases were sleeved too. Anything with a B or C Cummins and many Fords were parent bore.
Regarding trucks, the International/Navistar DT/HT (such as the DT466) and the later MaxxForce DT/9/10 were all wet sleeve engines and were widely used in medium-duty trucks.
2000 hours is a huge number of hours per year, that's 8 hours a day, 5 days per week, 50 weeks per year. 200 hours per year is more typical of a utility tractor. Rarely do you see more than 500 hours per year on a tractor.