I have a 10 month old with no teeth. This is not surprising because my first didn't get a tooth until she was almost 14 months old (and then they came in all out of order - the tops ones were first). My older child wasn't interested in solids until that tooth came through - she'd maybe taste one bite of what we put on her tray as an older baby up until she got teeth. My current baby has been having fits if I don't give her food... if I try to nurse her when we sit down, she seriously screams and cries, ha ha... and if I just try to hold her on my lap, she will grab my plate/cup... she's a very grabby baby! So, clearly she has all the solids readiness signs except teeth... and she also will still push chunks of food out of her mouth at times, but I think that is more of an issue of not being able to get chunks of food down and gagging them up. But I've noticed if she eats a lot of solids (by "a lot," I mean more than a tablespoon), she is more restless than usual when I try to put her to sleep for the night and throughout the night. It is particularly when I nurse her to sleep on my left breast - she'll be mostly out and then suddenly writhe and cry and not want to latch back on that side. I recently remembered that lying on the left side is what aids digestion, and she is lying on her right side when nursing on this side.
So... all that to say, if they are gagging up chunks of solids and having thrashing issues which might be related to gas/digestion, then are they really ready for solids? I don't want her to eat much food now, because if it's related, I'd rather not have it take 3 hours to put her to sleep! Usually it takes me 30-45 to nurse her to sleep and lay her down... the two worst nights were bean and watermelon... she actually had big diaper blowouts of those in the middle of the night, so to me that says she's not ready for those things, at least... for it to wake her up, clearly uncomfortable, and then to have diaper blowouts... so we've avoided both beans and watermelons since then! Tonight she had a few peas though - maybe five - so maybe since they are in the bean family they disagreed with her as well?