Aww sarah that is sooo lovely, bless her! And it sounds like you've really found a good thing here. Keep it up! I always feel such an absolute mess/failure when the topic of work comes up because I feel like I stand in a big room of ladders and maybe touch one or two of them and then jump off and in the meantime everyone else has actually got somewhere and I haven't D:
Username that makes a lot more sense! Sorry for assuming!
With BLW sticks of soft food, they will bite and squish off chunks and generally for the first stage they will be learning how to manipulate those chunks and 90-100% of them will be spat out. That is exactly how they deal with a lump that is too big for them to swallow, this is why they need to be sitting upright and not reclined.
With purees they kind of "drink" it so it's a different set of skills that they are using. With BLW they are using the muscles in their mouth/tongue to manipulate the food and move it around their mouth, then later they learn to gum on it which helps to mash it down a bit. But the first stage there will be more going out than staying in. They do move on from this but they need to learn this bit first, it's kind of a safety mechanism to help them not choke.
Alex is quite good with this - we have already moved on from the spitting 90% out in chunks and now he swallows 90% and only spits it out if it's an enormous piece (bread/toast that goes soggy is prone to this) or there's a bit he can't break down. He's chewing on ripe pear sticks at the moment and some of the skin is being projected out at quite some speed :o
BUT - I will say that I think this is an area where he is ahead of the curve - my other kids were spitting much more out at this age (he is still not quite 6 months, 3 days to go). He even has a bit of a pincer grip which is not usually seen until 8-9 months. So don't worry if your babies aren't swallowing much yet. Please bear that in mind when you read my list, this is what he's had in "full solid" form and swallowed some of:
Pear
Banana
Strawberry
Cucumber (not able to break much off this, just the soft bit in the middle/enjoys chewing for teething)
Baby breadstick snack
Rice cakes
Brocolli
Filled pasta
Garlic bread
Naan bread
Toast/raisin toast
Rice (sticky rice in balls/he sticks it to his hand and sucks off)
Chip
Paper 
If you feel anxious about BLW and lumps it's worth googling "BLW gagging" as you can watch a baby go through the whole process of dealing with a too-big chunk which is reassuring (you know the video ends well!) but also, it's fine to just stick to mashed/pureed food if you don't like it and return to finger foods at more like 8 months or so.