Hello - I am working to replace a predecessors work. He relied heavily on annotation feature classes, and I'd like to move to labeling on the fly. He has literally hundreds of annotation feature classes that he manually edits to match data in the tax lots. It's, well, interesting. I'd like to replicate his work with label classes that label on the fly and of course automatically adopt the data from the attribute table. Attached is a photo of 2 annotation feature classes that he has used on one tax lot. Is there an expression that can accomplish this? If I use vbNewLine for the Lot Number and the Acres, it puts the acres into the Lot Number shield and makes a giant oval, not what I want. Can't seem to find a successful approach online. My labels are NOT stacked in fitting strategy, using Maplex Label Engine, ArcGIS Pro 3.2.2.
Photo 1 is from annotation feature classes and what I am trying to replicate.

Photo 2 is as close as I've been able to come. I need to be able to stack my label classes.

Thanks in advance!