Are you thinking small or medium sized?
Have you DH/DP trained a puppy before? How much experience of dogs do you have?
I think with small DC, you need to look for breeds that have a reputation for being good natured and friendly. There's a reason why labradors get mentioned a lot as family dogs, they are generally friendly, trainable and biddable, they're also utter dustbins - eat everything and seem to have no 'off' switch to theirbappetite. They can be very bouncy, with both teeth and (strong, vigorous) tail at toddler head height.
A miniature poodle? Very trainable, usually friendly, low allergen
Most terriers are rather stubborn and not recommended for first time owners for that reason (might be different for a household with nomDC and more time/effort to put in to assiduous training). The exceptions are the smaller breeds noted for good natured temperaments - Border (the classic 'entry level' terrier) Norfolk and Norwich.
The temperament of the dam and the experience and initial environment provided by the breeder are important (as well as the basics like genetic screening, and general health checks)
How much grooming are you up for? How much drool and shedding can you live with?
And most importantly, can you really commit to the time needed to train, and for daily exercise - I'd say a minimum of 2x 45 mins per day (possibly with extra toilet walks of a few minutes) - more for active breeds, plus playtime and games. Also, you can't leave puppies alone for long, and even adult dogs, well habituated to being alone, shouldn't be left for more than about 4 hours
Finally, do remember to factor in the costs of insurance (unless you have a few £k savings you don't mind spending at the vets) plus flea/worming treatments as well as food and treats and replacement toys on an ongoing basis on top of the initial set-up costs