Sorry ... just joshing ... in terms of swarms you get whatever comes your way - all honey bees swarm ... it just depends on what bees are in the vicinity that decide to swarm. They could be feral bees they could be bees from a beekeeper who hasn't noticed or done anything about the preparations their bees have made prior to swarming. If that beekeeper keeps Buckies, or Carniolans or AMM's or local mongrels or whatever ... that's what you get.
Yes .. all bees have different characteristics ... the attributes a beekeeper will take note of are principally:
Temperament., Productivity, Calmness on the frames, Frugality over winter, Propensity to swarm, Reistance to disease, Tolerance/resistance towards varroa, Queen fecundity. They can be bred to 'improve' these qualities by selective breeding from known stock. You can buy queens that should have known characteristics that suit your beekeeping, obviously you can't guarantee anything if the queen has been open mated so many breeders will use artificial insemination from known stock drones to ensure the characteristics they desire are passed on.
As a new beekeeper what you really want is gentle bees ... there is nothing more off-putting for a new beekeeper than a colony that tries its best to kill you as soon as you go near them or which pour out of the hive all over you when you open them up. There are bee breeders who will sell gentle stock - I have some lovely black welsh bees that came from a queen from Ceri Morgan which are a delight to handle and have most of the above qualities in spades.
Of course, if you catch a swarm then you get what comes - but, if they turn out to be the bees from hell all you have to do is buy in a new queen, kill the existing one and replace her with your new one ... in a few weeks the new queen's genes will be the bees you have and the problem is solved. All this is pretty much in the future for you ,... Here's some background reading on the various types of honey bee and what you can expect.
https://www.osbeehives.com/blogs/beekeeping-blog/types-of-honey-bee-and-their-traits
Look out for a copy of Bees at the Bottom of the Garden by Alan Campion and read it - twice or three times ... it's not a beekeeping bible but it will give you a flavour of what you are letting yourself in for.
https://www.ebay.co.uk/itm/Bees-at-...789455&hash=item1aa810d374:g:zOgAAOSwNkhfiEyM