
Hi @AT2313w ,
According to the current policy, users in SharePoint could not see sites that they do not have access to.
As a workaround to show all sites, maybe you can export all sites as csv files through PowerShell (Sufficient permissions required), and then display them through web part. Of course, this is only to display some information about the site, and it cannot be updated automatically and needs to be run manually.
Something like this: on the left is the file (using the web part of the Document library), on the right is the selected file information display (using the web part of the File viewer)
Reference: Get All Site Collections using PowerShell
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