Like the fighter / ground attack P-47s, did LW use the 190F-8 against the P-51s, '47s, '38s?
No not unless they absolutely had too. Some folks will tell you that late war 190F8's were the SAME as FW-190A8's. If you remove the outboard MG151's from an FW-190A8 they are identical and it is virtually impossible to tell from a photo because externally they are the same.
Internally they were very different. The FW-190F8 was equipped with "Grosse Bombenelektrik" bomb release system and, with the exception of the first few production variants, a 115 liter internal auxiliary fuel tank. The initial FW-190F8's equipped with the tank were designated FW-190F8/R1. The emergency power system of the FW-190 jabo-rei used was extremely fuel hungry. Since 60 percent of FW-190 production was going to produce ground attack versions the Focke-Wulf factory began to just ship out all the FW-190's with the removable fuel tank installed when the same emergency power system was approved for altitudes above 1 km.
The FW-190F8 also came equipped with a lot more armour to protect it during it's ground attack role. The FW-190F8 was much heavier than the FW-190A8 jagd-einsatz or for that matter the jabo-einsatz.
The Luftwaffe was caught without a replacement for the Stuka and the FW-190 was adopted to fill the role because of the amount of ordinance it could lift.
Consequently you will find FW-190A jabo-einsatz in the Jagdgeschwader's Jabostafflen and the FW-190F/G in the Schlachtgeschwaders, Stukageschwaders, and SchnellKampfgeschwaders (dedicated ground attack units).
The FW-190A jabo-einsatz's and the P47's are fighters, which can carry bombs fulfilling the ground attack role. FW-190F8's are dedicated ground attack platforms that in a dire emergency can act as a fighter.
So, the P47 was a fighter pressed into service as a bomber but routinely flew pure fighter missions. The FW-190F8 is a specialized ground attack aircraft, which in a dire emergency can put up somewhat of a fight. You would never find an FW-190F8 flying a pure fighter mission.
Sure hope that helps and I haven't confused you.
My understanding is the 190F and G variants saw action mostly on the Eastern front. However some units may have employed these in the West or in Italy, I can't say for sure.
Your absolutely right and obviously know your history. The FW-190's on the Western Front were primarily air superiority fighter versions and made up the bulk of Kanalgeschwaders. On the Eastern front the most numerous version of the FW-190 was the ground attack variants making up the SKG, SG, SchlG's. I know the Med received a sprinkle of both based on the timeframe you reference.
Take Care!
Crumpp