I’m a new owner, but I’ve done a lot of research on diet and care. I have never come across anything pertaining to veggies being breed specific. From what I can tell, all rabbits should have fresh greens daily. It offers them variety and essential nutrients without being too nutrient dense, as is the case with pellets. This is why we feed limited pellets. I feed my bun 1 cup of romaine lettuce daily, along with fresh herbs such as parsley or basil, and she will occasionally get some bell pepper slices but I try not to give those daily.
Edit: I do know that you should not feed iceberg lettuce to buns. It is basically just water, so it id one to stay away from because it offers basically no nutritional value so what’s the point in giving it? Romaine and green leaf lettuce are totally fine to be given daily, from what I understand. They can have spinach but I believe I read somewhere that it should not be given daily. I will have to look again for the source I found that in.
Here’s a good resource from this site that also shows you which should be alternated and not given every day:
https://binkybunny.com/BUNNYINFO…fault.aspx