I just started using Leaf Spy, and it's showing my SOH at 86%, with 2,459km on it. It had 25km on it when I got it.
My Leaf is a 2017 S (30kwh), which I took possession of in early September, so I've had it for 3.5 months. Charging has been mostly L1 once or twice per week, only getting to 100%...