They liked the P-39 and they even liked the M-3 tank.
Russians also liked Spam. And Studebakers. And Mosins made by Honeywell.
P-39 was liked and Soviet engineers were embedded in US to help improve it for their environment. M-3 was actually rated by the Soviets as the worst piece of armor in their inventory ever. They had their designations for its variants: VG-6 and BM-7 jokingly referred as “(Tombstone) on a common grave for seven”, “All seven dead” or “Assured dead”.