Curate, connect, and discover
Specifically, Tim is for the kids who had parents with undiagnosed trauma and mental illnesses. The ones who had to gentle parent their own parents. The ones that have to remain stable even when they can't because they are needed.
Dick is for the eldest children that feel constant guilt for how their actions affect the rest of the family. In success, you set a standard too high for them and in failure you're taking away resources(time, emotional energy, money) that should have been theirs.
Somewhere in between, relating to them both, is the youngest that has to be happy all the time for the family to function. The one that gets made fun of when you need a joke. But also the one that knows everyone's triggers and is always paying attention to everyone's mood. The one whose work is never recognized because no one else has to be home as much as them, everyone else gets a break but them.
Dick is for the eldest sibling while Tim is for the parentified children and I think that's the most important difference between them