You say tomato, I say tomatoe . It's funny, I would prefer 'junior' not be used. It's not a kiddies belt. I guess it's just a preference thing.
Light Welterweight, Light Middleweight, Super Middleweight. I once heard Cruiserweight get called "Junior Heavyweight" but fortunately that isn't very common.
Light middleweight. The worst problem in boxing is having more than two champions in each division though
Any brit who calls it 'Super Welterweight' .. is probably the type who watches the Super Bowl every year, refers to football as Soccer, calls USA ' the states' , and is on the verge of celebrating thanksgiving day.
I once wrote an article about this, mainly having a go at the WBA. Its not ideal having more than one champion in a weight, its ludicrous to have more than one champion in an organisation.