The eduTEAMS DSX Discovery Service lists IdPs by organization name name. The Organization logo is shown on the right side of the name if available.
...
<mdui:DisplayName>within<mdui:UIInfo><md:OrganizationDisplayName>within<md:Organization><md:OrganizationName>within<md:Organization>
Organization Logo
The eduTEAMS DSX Discovery Service chooses logo from the <mdui:Logo> elements using the following process:
...