Question: Which fourth highest scoring ace in aviation history flew with the "Jagdgeschwader" 54?

Context articles: Geoffrey Hornblower Cock
Otto Kittel
Robert B. Westbrook (pilot)
Jagdgeschwader 54
James Francis Edwards
Bud Anderson
Charles Older
Alfred Atkey
Walter Southey
Arthur Vigers

Group Captain Geoffrey Hornblower Cock {'1': ", '2': ", '3': ", '4': "} (7 January 1896 – 16 February 1980) was a British World War I flying ace credited with thirteen aerial victories.
 He was the highest scoring ace to fly the Sopwith 1½ Strutter.
Otto Kittel (21 February 1917 – 14 or 16 February 1945) was a German fighter pilot during World War II.
 He flew 583 combat missions on the Eastern Front, claiming 267 aerial victories, making him the fourth highest scoring ace in aviation history according to authors John Weal and Jerry Scutts.
 Kittel claimed all of his victories against the Red Air Force.
Robert Burdette Westbrook (9 November 1917 – 22 November 1944) was a United States Army Air Forces lieutenant colonel and a World War II flying ace.
 Westbrook, a member of the California National Guard before World War II, completed flight training in 1942, and was sent to the South Pacific with the 44th Fighter Squadron, which he later commanded.
 Westbrook gained his first victories while flying the Curtiss P-40 Warhawk and in late 1943 began flying the Lockheed P-38 Lightning.
 After scoring his fourteenth victory, Westbrook was sent back to the continental United States on leave in spring 1944, returning as aide to the commander of the Thirteenth Air Force.
 In late summer he became deputy commander of the 347th Fighter Group.
 With 20 victories, Westbrook became the Thirteenth Air Force's highest scoring ace.
 He was killed in November 1944 while strafing a Japanese gunboat.
"Jagdgeschwader" 54 (JG 54) was a Luftwaffe fighter wing during the Second World War, which was the second highest scoring wing of all time, JG 52 being the highest.
 JG 54 flew on the Eastern Front claiming over 9,600 aircraft shot down, with pilots such as Walter Nowotny, Otto Kittel, Hans-Ekkehard Bob, Max-Hellmuth Ostermann and Hannes Trautloft being termed "Experten".
James Francis "Stocky" Edwards, CM, DFC & Bar, DFM, CD (born June 5, 1921) is a former Canadian fighter pilot during World War II.
 Edwards is Canada's highest scoring ace in the Western Desert Campaign.
Clarence Emil "Bud" Anderson (born January 13, 1922) is a retired officer in the United States Air Force and a "triple ace" in World War II.
 During the war he was the highest scoring ace in his P-51 Mustang squadron.
 This was the same squadron as well known test pilot (and first pilot to break the sound barrier) and ace Chuck Yeager, and they have remained lifelong close friends.
 Towards the end of Anderson's two combat tours in Europe in 1944 he was promoted to major at age 22, an extremely young age even for a highly effective officer in wartime.
 After the war Anderson became a well regarded fighter test pilot, and a fighter squadron and wing commander.
 He served his wing commander tour in combat in the Vietnam War.
 He retired as a full colonel in 1972, after which he worked in flight test management for McDonnell Douglas.
 A member of the National Aviation Hall of Fame, Col. Anderson has remained a sought after speaker at aviation and military events well into his 90's.
Charles Herman Older (September 29, 1917 – June 17, 2006) was the third highest scoring ace of the American Volunteer Group (the "Flying Tigers") and later the judge in the Charles Manson murder trial.
Captain Alfred Clayburn Atkey {'1': ", '2': ", '3': ", '4': "} (16 August 1894 – 14 February 1971) was a Canadian First World War flying ace, officially credited with thirty-eight aerial victories, making him the fifth highest scoring Canadian ace.
 However, all those above him flew in single-seat fighters, whereas Atkey gained all his victories in heavier two-seater aircraft, becoming the highest scoring two-seater pilot of the war.
Captain Walter Alfred Southey {'1': ", '2': ", '3': ", '4': "} (29 April 1897 – 17 April 1920) was a British First World War flying ace, credited with twenty aerial victories, including five balloons, making him the second highest scoring ace in No. 84 Squadron, behind Andrew Beauchamp-Proctor.
Captain Arthur Whitehair Vigers {'1': ", '2': ", '3': ", '4': "} (20 January 1890 – September 1968) was a British World War I flying ace credited with 14 aerial victories.
 He was the third ranking of the 27 aces who flew the Sopwith Dolphin, and the highest scoring ace in his squadron.