Why don't all of my contact fields sync from iOS to Outlook?

Outlook is much more restricted in terms of the fields and labels that it supports, compared to iOS, as detailed below:

	iOS	Outlook
Contact Photo	✅︎	Not currently supported
Notes	✅︎	✅︎
Email Addresses	✅︎	✅︎(Limited to 3, with no labels)
Phone Numbers	✅︎	✅︎(Limited to 5 phones: 1 mobile, 2 home, 2 business)
Postal Addresses	✅︎	✅︎(Limited to 3 addresses: 1 home, 1 business, 1 other)
Websites	✅︎	✅︎(Limited to 1 business website)
Relationships	✅︎	✅︎(Limited to 3 relationships: spouse, manager, assistant)
Event Dates	✅︎
Messaging Accounts	✅︎
Social Profiles	✅︎
Groups/Categories/Lists	✅︎	✅︎
Birthday	✅︎	✅︎
Anniversary	✅︎
First name	✅︎	✅︎
Middle name	✅︎	✅︎
Last name	✅︎	✅︎
Prefix	✅︎	✅︎
Suffix	✅︎	✅︎
Nickname	✅︎	✅︎
Phonetic First Name	✅︎	✅︎
Phonetic Middle Name	✅︎
Phonetic Last Name	✅︎	✅︎
Organization Name	✅︎	✅︎
Job Title	✅︎	✅︎
Department Name	✅︎	✅︎

This help article relates to the iPhone app called "Contacts Sync" which can be downloaded here:
https://apps.apple.com/us/app/contacts-sync-for-google-gmail/id454390333
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