Non-stem plants keep on growing too. If they didn't they would be ideal breeding grounds for algae. Shorter plants just get wider and more bushy, eventually taking up all of the room in the tank. We, who are lazy, are forced into cutting the light intensity down enough to slow the plants growth to better fit our work habits. With good CO2, this works very well. Light intensity is the gas pedal for plant growth.
I changed the text to a link. So, which genus has the most plants that will not grow over 24"? I guess anubias is not fully aquatic.
I'm one of those guys who does not want to be pruning all the time. I would like to plan the tank based partly on this. Also, I want to stair step from the back forward obviously so I want to go from tall to short. I need a good resource. I might try a scientific website but that info is based on wild plants.
Is there a plant book that tells max height, etc.?