There used to be a way to filter out personal pages when listing all the spaces, but it seems the mechanism disappeared with the new Spaces page.
Hello @Olivier Nemoz .
Do you mean to display only Personal spaces in Spaces -> 'View All Spaces' tab (CLOUD_URL/wiki/spaces) ?
Then you can use the filter tabs:
Also, if you want to exclude Personal spaces, you can select categories added to NOT personal spaces that are usually used for team/KB spaces.
Hope this helps.