MasterM64
🍀 Mayor of PARADISE 🍀
Or you can talk to Savannah a lot until she becomes close friends with you. I've found that the close friends tend to ping more, at least if they're near your house and can see them before another villager pings.
I honestly found that weird how they programmed the game to do that because you would think the opposite would occur! lol I do think the Amiibo approach is still the most effective method because it works even on villagers you brought in using Amiibo (which typically take forever to ping you).