You could just call your belly your molson muscle !!! That's also referred to as a beer belly but molson muscle sounds awesome :) and nothing walking a half hour a day and drinking lots of Water can't Suss if you wanna suss it :)
What body type is this? Muscular, looks like they have a big belly but it turns out that the belly has a ton of muscle on it? I have that and I don't like it, I've done ab workouts only to have a stronger core. What body type would you classify me as?
Sounds like a Lumberjack's body to me !
Does it matter? You are who you are, and you can't do anything about it.