の何人かは

some of ...

→ の
phrase Uncommon #17,688
some of ... Used to say that some members of a group are or do something. The group comes before の, and は marks the group members as the topic.
JA: 参加者の何人かは早く帰りました。
EN: Some of the participants went home early.

級友の何人かは試験に合格したが、残りの全部は不合格だった。

Some of my classmates passed the exam, but all the rest failed.

男性の何人かは床に座っていました。

Some of the men were sitting on the floor.

同僚の何人かはオーストラリアの出身です。

Some of my colleagues are from Australia.

彼らの何人かは賛成したが、残り皆は反対した。

Some of them agreed, but everyone else disagreed.

私の部下の何人かは、彼が実在する人物なのか尋ねられたそうよ。

Some of my subordinates say they’ve been asked whether he’s a real person.

私達の何人かはバスで、他は自転車で行った。

Some of us went by bus, while the others went by bike.

私の友人の何人かは英語を上手に話す事ができます。

Some of my friends can speak English well.

彼らの何人かは私の友人です。

Some of them are my friends.

私は級友に計画を提案したが、級友の何人かはそれに反対だった。

I proposed the plan to my classmates, but some of them were opposed to it.

その生徒たちの何人かはテニスをし、他はバレーボールをした。

Some of the students played tennis, while the others played volleyball.