Found a list also of what the USMC units ashore were flying.
MAG-31 (Yontan, Chimu) April 7
VMF-224 (F4U Corsair)
VMF-311 (F4U-1C Corsair)
VMF-441 (F4U Corsair)
VMF(N)-542 (F6F-5N Hellcat)
MAG-33 (Kadena, Awase) April 9
VMF-312 (F4U Corsair)
VMF-322 (F4U Corsair)
VMF-323 (F4U Corsair)
VMF(N)-543 (F6F-5N Hellcat)
VMTB-232 April 22 (TBM Avenger)
MAG-22 (Ie Shima, Chimu) May 21
VMF-113 (F4U Corsair)
VMF-314 (F4U Corsair)
VMF-422 (F4U Corsair)
VMF(N)-533 (F6F-5N Hellcat)
VMTB-131 May 30 (TBM Avenger)
MAG-14 (Kadena, Awase) June 8
VMF-212 (F4U-4 Corsair)
VMF-222 (F4U-4 Corsair)
VMF-223 (F4U-4 Corsair)
MISC.
VMB-612 (PBJ - B-25J Mitchell)
VMO-2 (L-5 Stinson)
VMO-3 (L-5 Stinson)
VMO-6 (L-5 Stinson)
VMO-7 (L-5 Stinson)
With the exception of VMF-311's F4U-1C's and MAG-14's F4U-4's I imagine all the other Corsairs were F4U-1D's.
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