Subgraph similarity (for an exam)

Hi guys, I have some problems with subgraphs...
I have this db:
image

I want to check the similarity of a specify person p1 with all the person that he follows, ex:

MATCH (p:Person {name: "Matteo Bardi"})
CALL apoc.path.subgraphNodes(p, {
relationshipFilter: "FOLLOWS>",
minLevel: 0,
maxLevel: 1
})
YIELD node
RETURN node

the image is this one:

How can I use Node Similarity in this subgraph??