H is a Jam Mallow, basically a biscuit base covered with jammy dodger glue with those signature dobs of marshmallow. They were common in my childhood, which featured a lot of biscuits. As children, we used to get huge bags of broken biscuits from the market and eat the lot till we bounced around like energetic particles and had to be sedated with intravenous gravy. My grandparents had a tin of biscuits that I swear predated the war. As did the contents. I think some of those biscuits were older than Queen Victoria. To get out of eating them, you had to claim a liking for more modern biscuit species, so my gran would buy them separately. That might explain Jam Mallows. I was always a big fan of Malted Milk. We definitely had Sports Biscuits too.
Never been a big fan of chocolate biscuits, but then I'm not a big fan of chocolate, so there you go. I don't have an upper limit on Tunnock's teacakes, of course, but then who does.