You are one of the people vs You are one of the person

Some examples from the web:

• You are one of the people
• You are one of the good ones, Nard Dog.
• You are one of the better ones.
• You are one of the lucky ones coming up under Patty Hewes.
• You are one of the very few people who are really running this country.
• You are one of the strongest girls I know.
• You are one of the most talented people here.
• You are one of those open women.
• You are one of the most brilliant lawyers I have ever met.
• You are one of the good guys.
• You are one of the last Grimms.
• You are one of us, my dear.
• You are one of the most peaceful beings I have ever known.
• You are one of us, Cassie.
• You are one of the pies, Fusco.
• You are one of the reasons I accepted.
• You are one of the worst candidates I've ever interviewed.
• You are one of the Wolves... of Fenric.
• You are one of those hopeless romantics.
• You are one of the leading exponents of the electronic brain in this country.
• You are one of the messengers.

Some examples from the web:

• You know, I read that one person is really like 3 people... the person you think you are, the person other people see, and the person you really are.
• Because GM thinks he and Don Draper are one person.
• So all of you are off the hook except for this one person.
• He was the one person who knew how dirty you are.
• In a similar vein, the Commission and Member States are urged "to respect the principle of proportionality and flexibility when considering EU employment legislation", since "non-wage costs are one of the major obstacles facing one-person enterprises in employing additional workers".
• We are certain, that one of the persons we're looking for is among these men.
• A registration effected under Article 24 shall be cancelled upon application by one of the persons concerned.
• The Commission has fears particularly because one of the persons imprisoned is leading a project within the framework of the European Initiative for Democracy and Human Rights.
• We divide the secrets so no one person knows everything in case one of us gets caught.
• More than one of the nominated posts may be filled by one person if acceptable to the Authority.
• Howard, you are the one person on this earth who believes in me.
• It's too much for one person. I don't care how smart you are.
• So in effect, you are like Odysseus and the first mate in one person.
• You are allowed to reveal the true nature of our work to one person.
• But there is exactly one person in this place Who you can truly trust to the core, And you are doing your best to alienate her.
• But Rusty's the one person who knew exactly who you are.
• Since one person is playing without doing anything, three of you are $90.
• No, one person loses - The person who thinks that they're dating someone Exclusively and then finds out that's not the case.
• a contact or associate of one of the persons listed above, and
• - a contact or associate to one of the persons mentioned above, and