If you want the hum drum practical options, you're probably looking at fighters like the Gladiator, the Seversky fighters, the Hawk 75, or the Hurricane. Other types would likely be the
Here are some possible alternatives exported during that period:
UK: Gloster Gladiator, Hawker Hurricane
Netherlands: Fokker D.XXI
France: Morane-Saulnier M.S.406, Potez 63
Italy: Fiat BR.20, Savoia-Marchetti SM.79
Germany: Heinkel He 112, Focke-Wulf Fw 58, Junkers Ju 86, Messerschmitt Bf 108
Poland: PZL.23 Karaś, PZL P.24, PZL.37 Łoś
USA: Curtiss P-36/Hawk 75, Douglas 8A, Martin 139, Seversky P-35
All these aircraft were pretty advanced and enjoyed some level of export success. A lot of other types were less advanced or post-1936.
Cheers,
Logan