Where are Google Chrome bookmarks stored in macOS for multiple profiles?
As you've stated, the default location is found within:

Users/&lt;username&gt;/Library/Application Support/Google/Chrome/Default

However, when you create additional profiles, the name Chrome uses on the associated profile folder is a generic numbered name (e.g. Profile 2, Profile 3 and so on)

The best way to find the folder path for a particular user is to:


Within Chrome switch to the other profile
Chrome will open a new window using the profile you just selected
Now in the URL/address bar enter the following: chrome://version
Press Enter
The browser window will now provide a whole range of data
Look for the Profile Path entry
This will show you the exact file path location of the profile you selected at Step 1
Now you can use that path to find all the data associated with that profile