Alphabet is the holding company which owns Google and a number of other companies:
Alphabet
https://en.wikipedia.org/wiki/Alphabet_Inc.
https://en.wikipedia.org/wiki/Larry_Page
https://en.wikipedia.org/wiki/Sergey_Brin
https://en.wikipedia.org/wiki/John_L._Hennessy
https://en.wikipedia.org/wiki/Sundar_Pichai
Here are the various subsidiaries of Alphabet:
Google
Internet-related services and products
https://en.wikipedia.org/wiki/Google
https://en.wikipedia.org/wiki/Sundar_Pichai
Google Fiber
Fiber-to-the-premises service
https://en.wikipedia.org/wiki/Google_Fiber
https://www.linkedin.com/in/dinni-jain-1127041/
Loon
High-altitude balloons for Internet access
https://en.wikipedia.org/wiki/Loon_LLC
DeepMind Technologies
Artificial intelligence
https://en.wikipedia.org/wiki/DeepMind
https://en.wikipedia.org/wiki/Demis_Hassabis
Waymo
Autonomous driving
https://en.wikipedia.org/wiki/Waymo
https://en.wikipedia.org/wiki/John_Krafcik
Wing
Drone-based delivery of freight
https://en.wikipedia.org/wiki/Wing_(company)
https://www.linkedin.com/in/james-burgess-374b84/
Verily Life Sciences
Life sciences
https://en.wikipedia.org/wiki/Verily
https://en.wikipedia.org/wiki/Andrew_Conrad_(geneticist)
Calico
Biotech and combating aging
https://en.wikipedia.org/wiki/Calico_(company)
https://en.wikipedia.org/wiki/Arthur_D._Levinson
Sidewalk Labs
Urban innovation
https://en.wikipedia.org/wiki/Sidewalk_Labs
https://en.wikipedia.org/wiki/Daniel_L._Doctoroff
X
Semi-secret research and development facility
https://en.wikipedia.org/wiki/X_(company)
https://en.wikipedia.org/wiki/Astro_Teller
GV (formerly Google Ventures)
Venture capital (seed stage)
https://en.wikipedia.org/wiki/GV_(company)
https://en.wikipedia.org/wiki/David_Krane
CapitalG (formerly Google Capital)
Private equity (later stage)
https://en.wikipedia.org/wiki/CapitalG
https://en.wikipedia.org/wiki/David_Lawee