So I've found some more info on the combined Franco-British orders.
These included:
- Martin 167 and 187
- P-38 Lightning (up to 800 considered)
- Curtiss P-46 (would most likely have been converted to P-40D by both France and the UK due to the 46's failure)
France and the UK also had exchange programs for niche weapons that one country didn't have in enough numbers domestically. This is how France was going to purchase Boys AT rifles to bolster AT capability at the company level, while Britain was going to receive B1 Bis/Ter tanks as an interim to A20/22/TOG, 25mm AT guns as they were lighter than 2pdr and to compliment it, and French LMGs.
Finally, France bought at least 3500 Allison V-1710 engines for their own uses. It was expected to stop receiving or ordering US weapons at the end of 1941 since by then the French industry should be good enough.