Early war planes in the game are 109e, a6m2, P40C, spit 1, hurr 1, c202 ( maybe). I believe thats it. The 190A5 is considered mid war, and ironically one of the best midwar planes in the game.
The old EW arena had following lineup:C-47AJu 88Lancaster IIITBM-3Boston IIID3A1Ju 87D-3B5N2B-25CG4M1 BettyFi 156He-111Spitfire Mk IXBf 109F-4Spitfire Mk VC.202Fw 190A-5Hurricane Mk IICBf 110C-4bSpitfire Mk IBf 109E-4Hurricane Mk IF4F-4A6M2P-40EP-40CP-38GP-39DI-16Brewster B-239Sea Hurricane Mk ISpitfire IX, Lancaster, P-38G and FW 190A-5 were perked
From that list, I have scored these kills so far:109F-4 (1)Hurri 2C (1)190A-5 (13)Sea Hurri (3)Spit IX (1)For achievements, it says I have only 5 kills in EW planes and only 2 kills of LW planes.Pretty sure the 109F kill counted (La7) and possibly the Hurri2C (190D-9) but the kill in the Hurri was last month and I could have sworn I had zero kills of LW planes until this week.
The old EW arena had following lineup:
The old MW arena had all of the EW planes plus:A-20GB-17GB-24JB-25HB-26BIl-2Ju-87G-2Ki-67Tu-2SA6M3A6M5bBf 109G-2Bf 109G-6Bf 110G-2C.205F4U-1F6F-5FM2Hurricane Mk IIDKi-43-IIKi-61La-5FNMe-410Mosquito Mk VIP-38JP-39QP-40FP-40NP-47-D11P-51BSeaFireSpitfire Mk VIIITyphoon IBYak-7bYak-9TUnfortunately I don't remember exactly the perked ones. I know the Typhoon was a perk plane in MW, and I think the Spitfire VIII was one, too.