mogul /ˈmoʊgəl/ 大人物；大亨；富豪；權貴；巨頭
movie/media/industry moguls 電影／傳媒／工業巨頭
He is a real estate mogul. His net assets is said to exceed 10 billion U.S. dollars . 他是一個地產大亨。他的資產淨值據說超過百億。
magnate /ˈmægˌneɪt/ 巨擘，富豪，大亨；工商界巨頭
a well-known shipping magnate 赫赫有名的船王
a press magnate 報業巨子
a steel magnate 鋼鐵大王
an oil magnate 石油大亨
a business/property/shipping tycoon 商業／地產業／船業巨頭
movers and shakers 有權勢的人; people with a lot of power and influence.
It's a play that's attracted the attention of the Broadway movers and shakers. 這部戲劇引起了百老匯大人物的關注。
Who are the movers and shakers around here?
honcho /ˈhɑːntʃoʊ/ 負責人，主事者; the person in charge
Who's the head honcho around here? 這兒誰是負責人？
Talk to the head honcho. [=the person with the most authority]
who's who: the important and well-known people in a particular field.
The convention was attended by a who's who of the publishing industry.
hot shot 高手；能人；要人；大亨: a talented and successful person.
She's quite a hotshot at chess.
Now he's a lecturer, he thinks he's a real hotshot!
The company has hired a couple of young hotshots to revamp its advertising campaign.
They've hired a hotshot lawyer.
big shot 大人物
He is a big shot though he looks so common . 雖然他看上去很普通, 但他是個大人物。
His father is a big shot in the steel industry . 他父親是鋼鐵業的大人物。
big wheel 重要人物；具有影響力的人
That man is a big wheel in the electronics industry . 那個人是電子工業鉅子。
We were invited to a lunch with local bigwigs. 我們受邀與當地要人共進午餐。
All the bigwigs of the city gathered together to discuss the formation of a new development bank . 這個城市的所有的大亨聚集在一起討論如何成立一家新建設銀行。
She had to entertain some boring local bigwigs.
big gun 有影響力的重要人物 She's a big gun in city politics. 她是市政要人。They called in the big guns to deal with the problem.
big noise 有影響的人, 要人, 名人
In our school, Professor Johnson was a big noise . 在我們學校, 約翰遜教授是個鼎鼎大名的人物。
Police have arrested the suspected kingpin of a car-stealing operation.
top dog/ top banana 權威；優勝者 The principal person in a group, organization, or undertaking; a person who has achieved a position of authority
He's the mob's top banana.
Now that she's top dog you can't get hold of her at all.
*second banana = B咖、配角；助手
I generally don't mind playing second banana when I'm with such a legendary comedian, but it would be nice to be the one getting all the laughs once in a while.
The plumber left his second banana behind, to finish installing my new sink.