>>449
最初はこう考えてCなのかと思ったんですが、この考え方は合ってますか?

They talked about the kind of people.
+They want
+they are the kind of people → to be the kind of people に圧縮

to be the kind of people のbeは自動詞なので、the kind of peopleは補語C
 ↓
その補語Cが関係詞thatとなって前へ出た
 ↓
They talked about the kind of people that they want to be.