From what I can understand, you’d like to be able to reference Text objects drawn in Rhino and have the location and text available in GH?
As you can see, GH has no default way to do this in its current incarnation. There are several GH Add-Ons (Elefront, Human, among others probably) which enable this, but it is also pretty straightforward to do this with a few lines of code. The attached definition references Text objects via their guid in a c# component. Since this is using RhinoCommon, you should be able to do the same with a GH_Python component with a bit of adaptation.