It's exciting to talk to someone with so much in common.
Great minds think alike.
It's exciting to talk to someone with so much in common.はほぼ直訳ですね。
Great minds think alikeの方は、共通点というよりは考えが同じ場合、「偉大な頭脳は考えることが同じですね」というように自分と相手を同時に自画自賛する表現で、ビジネスでよく使われます。
例えば:
I was just about to say the same thing. Great minds think alike.