Neos\ContentRepository\Core\SharedModel\Node

This describes a node's read model identity namely:

The NodeAggregateId supersedes the Node Identifier from Neos <= 9.x.

An immutable collection of NodeAggregateIds, indexed by their value

The Node name is the "path part" of the node; i.e. when accessing the node "/foo" via path {NodePath}, the node name is "foo".