Are you one of those people who cringe — or is it "cringes"? — at misused apostrophes? Or is your favorite desk dinner one of those microwave meals that stinks — or is it "stink"? — up the whole office?
Sentences with "one of those" can be confusing because either a singular or a plural verb seems like it would work: "one" is singular, and "those" is plural.
Here's an example: "Georgia is one of those insufferable people who correct others' grammar mid-sentence." Is the subject of the verb "correct" the noun "people" or the noun "one"? If it's "people" (hint: it is), then you need "correct." But if it were "one" (which it's not, hence we use the subjunctive here), then you would need "corrects."
Think about it this way: There are insufferable people who correct others' grammar mid-sentence. Georgia is one of them. "People" is what "who" refers to, and "people" is the subject of the verb "correct," which means that "correct" needs to be plural.
Never miss a local story.
The more mathematically inclined may prefer to look at it this way: [Georgia is one of [those insufferable people who correct others' grammar mid-sentence]].
As an alternative, you could say, "Georgia insufferably corrects others' grammar mid-sentence" or "Georgia is a person who insufferably corrects others' grammar mid-sentence." Those are fine too, but they're different constructions.
Now you can be one of those people who get this right — but there's no need to butt in on others who don't.