What can I use in Python to create a visualization of a flowchart with data shown inside the nodes as boxes?

I am looking for a way to create a graph/flowchart in Python that will allow me to create nodes as boxes of multiple values of data (ideally separated into different lines of information such as shown in one of the boxes in the picture). So far, I have tried using ETE3 which had the graph and node structure I am looking for but wouldn't allow me to connect two parents to one child. I have also looked into networkx some but there doesn't seem to be much flexibility with the structure of the nodes. Here is a reference to help better understand my goal: