You shouldn't feel bad about any confusion about late war USN markings. It was confusing to those present at the time and unit markings changed twice in about a six month period, meaning some units had 3 different markings at the same time since not all aircraft in all units were changed before the next iteration of markings was instituted.
Generally, upper right and lower left wing markings were later than both upper wing marking arrangements.
Here is some info about markings:
"Back on 7 October 1944, ComAirPac issued direction for a standard set of twenty-eight geometrical designs for the CV and CVL class carriers that made up Task Force 58. These designs were assigned to the carriers themselves, not to air groups, and were applied to all aircraft of the attached air group as long as it was aboard.
On 28 July 1945, a 2d Fast Carrier Task Force (TF-38) order assigning one or two alphabet letter characters to each fast carrier (not air group) went into effect. The impetus behind the change was that in the whirl of combat the geometric markings were often difficult to discern and, when described in a report or, worse, over the radio, seemed to lose something in the translation. Thus it was sometime difficult to decipher the involvement of aircraft from different ships in various actions. Aboard the FCTF flagship, VAdm McCain ordered that something be done to remove confusion, that a new, Navy-wide, system for CV, CVL, and CVB carriers be created. In the Operations shop, Ops Officer Captain John S. “Jimmy” Thach turned the problem over to his assistant who decided that letters were the answer and assigned letters, one or two, two these classes of carriers (CVEs had their own system of stripes and colors), specifying 24 inch high, block capital letters with 2 inches wide strokes to be placed on both sides of the vertical tail surfaces and the upper right and lower left wing tips of the aircraft assigned to the carrier. These codes remained in effect until 7 November 1946. These codes were:
A - USS Cowpens (CVL 25)
AA - USS Lake Champlain (CV 39)
B - USS San Jacinto (CVL 30)
C - USS Monterey (CVL 26)
CC - USS Saratoga (CV 3)
D - USS Independence (CVL 22)
E - USS Intrepid (CV 11)
EE - USS Coral Sea (CVB 43)
F - USS Essex (CV 9)
FF - USS Franklin D. Roosevelt (CVB 42)
H - USS Lexington (CV 16)
K - USS Langley (CVL 27)
L - USS Randolph (CV 15)
LL - USS Franklin (CV 13)
M - USS Enterprise (CV 6)
P - USS Belleau Wood (CVL 24)
PP - USS Ranger (CV 4)
R - USS Cabot (CVL 28)
RR - USS Yorktown (CV 10)
S - USS Hornet (CV 12)
SS - USS Bon Homme Richard (CV 31)
T - USS Bataan (CVL 29)
TT - USS Bennington (CV 20)
U - USS Hancock (CV 19)"
This can be seen in Greebo's (excellent) skins of our F4U-4 (VBF-94) and one he made for our F6F-5 (VF-94). Both were the same Air Group on the Lexington, but the F4U-4 is post July, 1945 and the F6F-5 is pre July, 1945.
