As for US and UK I focus soley on the atlantic. Building 1 carrier (landing two figthers on it) and 2 destroyers for UK in round i.
UK will take out the JP tansport i SZ59 with the crusier from SZ35, landing the figther from SZ35 in india. Move the man from Persia into India. Now India is secure for 1 round.
you take out the german crusier and transoport with the bomber and figthers.
In the atlantic you have lost the Battleship and the transport in SZ2. So you build new navy in SZ 2 or SZ8. If you use SZ8 you can move the destroyer from SZ13 into SZ8 (if it is still alive).
Now Germany will loose 2 figthers and all their subs) if they attack your navy (in that case you just build a new one).
With US you build navy (one BS or one carrier) if Germany has build navy. Othervise build 2 transports, 2 infantry, 2 tanks and 1 bomber.
The UK/US force then focus on the almost undefended Norway (taking it with UK in round 2 or 3). UK can pump their entire production into Norway every round by transports (you need a total of 4 transports for UK). US will send the heavy backup of men, tanks and bombers/figthers by way of Canada (you need a total of 6 US transports divided into two groups for an efficient pump from Canada to Norway.
This strategy leaves Asia open to Japan, but Japan can only reach Russia in round 6-7, by that time the UK/US force in Karelia is so strong, that Germany have to focus on countering it, and US can send vast amounts of figthers to Russia to help defend.
Try it out and tell me what you think.