Expression for people who are similar
Is there a single word or expression for people who share similar interests? Can the word "alike" be used in this case?
Birds of a feather
Kindred spirits
Soul sisters/brothers(?)
I can't really help much without more context but you're probably looking for like-minded, defined by the online Merriam-Webster as
having a like disposition or purpose : of the same mind or habit of thought
For example:
She enjoyed the club because she could meet like-minded people.