I actually do this (looking at people’s skills, assets/liability) as a by-product from when I was in the Marines.
I have a number of good neighbors with varied skill sets that fill in the gaps of my own.
Health would be a big factor as one of my neighbors are elderly, and are on various medications. We look out for them, help with heavy or awkard chores etc.
Get along great with the Amish. I am taking in one of my Amish neighbor goats to breed her with my buck. Already have the pen set up for when the livestock come in from the fields.
Most around here are friendly. Grated when SHTF that could all change, but I think if we do our best at the on-set to establish a network we could be ok.