WILDE is great stuff, and I their flush fasteners are nice.
If I'm not mistaken the current Proto pliers are rebranded WILDE.
For vintage, Crescent / CeeTee, Utica, Diamond, Kreauter, Pexto are all good stuff to look for.
I'll also add that since you'll be looking for used tools in the wild, if you see a pair of the Bernard patent / Sargent parallel jaw pliers pick them up because they're so darn handy.
You don't have to go and order a brand new pair ( Sargent still makes them here in the USA ) but if you find a pair cheap snatch them up.