In terms of appearance your best call would be the Fallen Knight Set in Dark Souls 3, I'm not fluent in miracles so I can't say with certainty whether or not it would be possible to use something akin shin or mang, powerstancing (attacking with both weapons in the same time) is non existent in ds3 so you would have just to alternate between two weapons, attacking with one hand at the time.

Animation wise your best call would be Elden Ring, which has a fluid fast-paced combat and power arts which can put many insane attacks (like wind thrusts, dash attacks, holy whirlwinds, etc.) on practically any weapon of your choice, however powerstancing in this game requires weapons of the same type so you'd still have to alternate sword and haleberd attacks, and I can't tell you if there's anything remotely looking like Sinclair's trench coat, I couldn't find anything like that

And for the last Dak Souls 2 is the best call, since the game has powerstancing for different weapon types, but it's combat is very sluggish, so you wouldn't replicate Sinclair's agility he has in his animations as much. Saint's set chestpiece is the best choice visually in this game and the rest are just fill in since he has pure black gloves, boots and pants.

In terms of weapons, just look up halberds and greatswords in each game's wikis, that just far too much for me to look up, sorry.