My DS is 10 months old and still gags on some 7 month jars - Hipp are definitely smaller lumps and I found to begin with the pasta versions seem to go down easier. (Spaghetti Carbonara is the favourite!) My DS seems to think that everything that's on a spoon doesn't require chewing, and so although he's getting better with finger foods, he still has a tendancy to gag on lumpy spoon-fed food.
Agree with Twiglett. Lots of babies struggle with lumps, particularly lumps in sauce (IYSWIM) i.e. they can chew finger food but they gag if they get something smoothish and suddenly find a lump in it. I used to mash or puree 7 month jars a bit, but mostly I gave ds1 home-made food and I cooked everything till it was very soft and mashed or chopped it, gradually making it more lumpy.