White Bunching Onion Seeds

Small onions, baby onions, green onions and spring onions are terms that make some sense, but would anyone call them bunching onions? One explanation is that they are sold in bunches. Another is that you can grow the seed close together, in a bunch, to prevent bulbs from forming.
The naming of onions is very confusing, in part because common names are local. A green onion in the US is not the same as a green onion in England or Australia. I just bought some bunching onion seed called Southport White Globe ? Green Bunching Strain from Stokes, an American/Canadian company. A little online research indicates that this is not a bunching onion. It is actually Allium cepa, an onion that will form a bulb .