Leading power factor for residential customers
You found that modern homes behave like capacitive loads. That does not surprise me at all. A "lagging" power factor is caused by big inductive loads (ie. electric motors). Look around your house now - how many big electric motors do you have?

Motors at my home:


air conditioning (has a VFD, so it is an SMPS with capacitors, which can behave like a capacitive load)
washing machine (mine has a BLDC, so it also has a VFD to drive it)
fridge (this one may actually have a "bare" motor so it can be an inductive load)
some small fans (same as the fridge)


Now look at all other loads, especially the ones with their own power supplies:


TV - big fat power supply with capacitors
computers
LED lighting
chargers
routers? switches?
everything that has a power supply "brick"


They all behave like capacitive loads and are plugged in all the time, while my fridge cycles and other motors have their own power supplies. Of course the power supplies must have PFC, but I guess that it makes them just "less bad" than "perfectly resistive". When you add my fridge power factor against everything else it turns out that my house behaves like a capacitive load.