Create new bulk login accounts

[Katherine-MN]

Sub-issue description

When testing with users outside of our team, sometimes we have them review designs directly in the code. To do this, they need to be able to temporarily access one of our lower sandboxes. This ticket is focused on creating new "test" login accounts.

Acceptance criteria

• Create new bulk login accounts for usability testing and save in a new tab within this spreadsheet.
• Update the ReadMe document, as necessary.

Additional context

Adding accounts to fixtures:
1-8 (standard user accounts - dev ticket): #4769
✅ 9-10 (analyst accounts): #4764