Id go with the P47 and the Typhoon for ground strafers in a single engine aircraft. As for the twin engine, the P -38 as I understand it could lower flaps 10 degrees which gave it a slightly nose down attitude in level flight which would be an advantage-the only negative would be the liquid cooled engines. The advantages of these 3 would be speed and the ability to defend themselves against enemy fighters. If that were not a concern, the A26 with the 8 gun nose should do a fine job, as would the Mosquito. Amazing how much damage a wooden frame can take and stay in the air.....