Do you prefer catching new Pokémon every route or building a consistent team early?

I tend to catch new Pokémon whenever I can. Filling out the Pokédex is one of my favorite things to do, so the moment I see a new species of Pokémon, I can assure you that I'll either be hucking Poké balls at it until I catch it, or I'll run out trying. As for my team, I usually have a pre-planned team, but sometimes there are some late-game Pokémon on it, in which case I'll have a placeholder until then. For example, I was hoping to put Cetitan on my team in Scarlet, but it took me a while to get one, so until I found a Cetoddle, I instead had a Brambleghast on my team. Even without frequently switching out party members, though, I still like to train more Pokémon than just my main party. And when I spend time with a Pokémon, it tends to make its way up to my favorites! :>
I guess I haven't actually properly answered how it affects my journey, though. I guess it requires a bit less time grinding for experience, because my Pokémon will have been with me the whole way!

i like pulling a pokemon from a new route to add to my team. I am someone who will check a route for every pokemon I can find until I think no new ones are appearing.

I put Pokemon on my team based on what order I caught them in. Any new Pokemon I add are going to belong to types I don't have on my team. That, and the coolness of their designs, are usually the criteria I use. Also, I normally have at least one legendary.