We have a client with specific font standards in AutoCAD® that I suspect will carry over into Revit®. These differ from our office standards, so I was looking for a way to more easily change the fonts used for various text entities in a project file started with our template file or loadable families, and hoping to use Dynamo as part of the solution.
In a project file, getting all of the TextNoteTypes (for Text) is fairly straightforward. Start with an Element Types node set to "TextNoteType" and feed it to an All Elements of Type node. In a family file where Labels are present, getting a list of TextElementTypes is a little more complicated, if you do not want them mixed in with TextNoteTypes, as setting the Element Types node to "TextElementType" and feeding the output to an All Elements of Type node will return both types. A List.FilterByBoolMask node can be used to separate the two types, if your application needs to operate on just one or the other type (or both, but separately). The image below illustrates one possible arrangement, where the in ouput will have a list of the TextElementTypes (Labels) will and the out output will have a list of the TextNoteTypes (Text).