Here is a list of how to ask for WordPress logins and the popular hosting companies.
WordPress:
We need an ADMINISTRATOR level login for the WordPress site
If they have a different login than /wp-login.php (They will typically say /wp-admin and that is okay) we will need the login.
They can also add <ENTER DEFAULT USERNAME> as an ADMIN user and use the email address <ENTER DEFAULT LOGIN EMAIL>
If they have a WordPress Multi-site account we require super-admin access to the site.
Hosting:
We will need an (S)FTP minimal for the site. We can also ask for the “hosting” logins.
Specific Hosting Access: Always use the email address <ENTER DEFAULT LOGIN EMAIL>
WP Engine (some clients want to call it “WordPress Engine”): https://wpengine.com/support/users/
Go Daddy: https://www.godaddy.com/help/give-others-access-to-my-godaddy-account-12376
Flywheel: https://getflywheel.com/wordpress-support/collaborator-flywheel/
Pantheon: https://pantheon.io/docs/team-management/
SiteGround: https://www.siteground.com/kb/developer-access/
BlueHost: Does not have the ability to grant others logins. Must use client login.
HostGator: http://support.hostgator.com/articles/how-to-create-and-manage-user-accounts-plesk-10
Liquid Web: https://www.liquidweb.com/kb/how-to-add-an-authorized-user-in-manage/
Rackspace:
RackConnect: https://support.rackspace.com/how-to/add-authorized-users-in-the-rackconnect-management-interface/
My RackSpace Portal (VPN): https://support.rackspace.com/how-to/add-new-vpn-user-myrackspace-portal/
Hybird: https://community.rackspace.com/products/f/hybrid-forum/4410/adding-a-user
InMotion Hosting: cPanel, WHM, AMP, or FTP login. They do not do shared users
TMD Hosting: cPanel, WHM, or FTP login. They do not do shared users
1&1 Hosting: FTP or account login. They do not do shared users.
GreenGeeks: FTP, cPanel or account login. They do not do shared users.
iPage: FTP, cPanel or account login. They do not do shared users.
Site5: https://kb.site5.com/new-backstage/new-backstage-how-to-add-an-additional-user/
Pagely: https://support.pagely.com/hc/en-us/articles/226884367-Add-Collaborators-to-your-Pagely-Account
HostMonster: FTP, cPanel or account login. They do not do shared users.