You could look into Attribute Assistant for this as long as you are editing within ArcMap and not though ArcGIS Online or ArcGIS Pro. My organisation uses it predominately for grabbing the attributes of a nearby feature and population a field within the one we are editing.
This is the description of Attribute Assistant
"The Attribute Assistant Add-In is an editor extension that uses a series of predefined methods to populate attributes when you create new features or edit existing features in a geodatabase."
Depending on your experience level it could be quite a learning curve but the benefits of it are great. This is a list of all the methods (things it can do). You could probably use the "Expression" method adn set it to the "on create rule".