Welcome and be welcomed. All 3 species you mentioned are smaller parrots but don't let their size fool you, they are very much all parrot. All parrots have things common. They all make noise, they all are messy and they all, at some point , bite. But a scream from a smaller parrot is not so loud that your hearing can be damaged (a macaw scream can be as loud as a jet engine). The mess a small parrot is obviously going to less and a bite from a smaller parrot will be less damaging than their bigger cousins. although macaws in particular don't usually take off a finger (even though they could if they wanted to). For a family with small kids, you can't go wrong with a cockatiel, really. Smart, cute, ability to whistle just about any tune you can think of, with personality to accept more then one person in the 'flock' they are good family parrots. On the down side, they can be skittish around hands, especially small fast moving ones, like the way most children have, but once your children understand that they can frighten the parrot cockatiel can be great childhood friends.
Quakers can get very cage aggressive. Conures can be bitey but with the right training that can be managed, however small children might not have the ability to adhere to that training.
As I'm sure you are finding out, with all parrots, you get out of them what you put in. They are 180 degrees opposite of dogs and cats in most regards, more like 3 yr old toddlers than a 'pet', better thought of as companions than pets.
Yes, welcome to our forums. There is a wealth of info and knowledge on here, no matter which species you get. A warning though - there are TONS of bad information, advice and suggestions out there on the internet. I can't even begin to list all the poor, ill advised and sometimes downright dangerous things you will find, so find a source that you trust, and stick with that one.
One last thought for you. Try hard to find a local, good quality, responsible breeder of the species you want, to purchase your parrot from. If you buy a baby or young parrot, only accept a fully weaned and fledged one. Weaning a baby from formula to solid foods is a skill that if done incorrectly can kill your parrot and letting the bird fledge his feathers and learn at least the basics of flight is beneficial for their long term pyscolgical well being. Both take time, and bad breeders what to move babies as fast as possible.
I hope you stay with us and write about your family and their new addition!