Which US Fighter Aircraft shot down the most enemy planes in World War 2?

Credited claims for aircraft flown by US pilots by theater for aircraft being operated as day or night fighters or variants:

Pacific Theater (includes Aleutians, Central Pacific, South Pacific and Southwest Pacific operating areas):

F6F = 5,221

F4U/FG = 2,155

P-38 = 1,700

F4F/FM-1/FM-2 = 1,408

P-47 = 697

P-40 = 661

P-51/A-36/F-6 = 297

P-39/P-400 = 288

P-61 = 64

PV = 20

F2A = 10

P-36 = 3

P-70 = 2

P-26 = 2

P-35 = 1

European Theater:

P-51/A-36/F-6 = 4,239

P-47 = 2,686

P-38 = 497

P-61 = 59

BW-393 = 39

Spitfire = 15

F6F = 8

Beaufighter = 6

P-39/P-400 = 3

F4F = 2

Mediterranean Theater:

P-38 = 1,431

P-51/A-36/F-6 = 1,063

P-40 = 592

Spitfire = 364

P-47 = 263 = Fifth Place

F4F = 26

Beaufighter = 25

P-39/P-400 = 25

Mosquito = 1

China-Burma-India Theater, including the AVG:

P-40 = 741

P-51/A-36/F-6 = 345

P-38 = 157

P-47 = 16

P-39/P-400 = 5

P-61 = 5

P-43 = 3

Overall against European opponents

P-51/A-36/F-6 = 5,302

P-47 = 2,949

P-38 = 1,928

P-40 = 592

Spitfire = 379

P-61 = 59

BW-393 = 39

Beaufighter = 31

P-39/P-400 = 28

F4F/FM-2 = 28

F6F = 8

Mosquito = 1

Overall against the Japanese

F6F = 5,221

F4U = 2,155

P-38 = 1,857

F4F/FM-2 = 1,408

P-40 = 1,402

P-47 = 713

P-51/A-36/F-6 = 642

P-39/P-400 = 293

P-61 = 69

PV = 11

F2A = 10

P-43 = 6

P-36 = 3

P-26 = 2

P-70 = 2

P-35 = 1

Add them all together:

1st Place = P-51/A-36/F-6 = 5,944

2nd Place = F6F = 5,229

3rd Place = P-38 = 3,785

4th Place = P-47 = 3,662

5th Place = F4U = 2,155

6th Place = P-40 = 1,994

7th Place = F4F/FM-2 = 1,436

8th Place = Spitfire = 379

9th Place = P-39/P-400 = 321

10th Place = P-61 = 128

11th Place = F2A/ BW-393 = 49

12th Place = Beaufighter = 31

13th Place = PV = 20

14th Place = P-43 = 6

15th Place = P-36 = 3

16th Place = P-26 = 2 tied

16th Place = P-70 = 2 tied

17th Place = P-35 = 1 tied

17th Place = Mosquito = 1 tied

P-40s, operated by American pilots including the AVG, was, world-wide, the 6th most prolific producer of credits. The only theater where P-40s with US drivers finished at the top was the CBI. R Leonard