Can't find "camera makers" sub-category

There used to be forums/sub categories/whatever for Leica/Panasonic/Sigma etc.

Starting at 'Home' I can no longer find them. Please advise ...

Looks like they've all been swept into "Photo Hardware Discussions" ...

There were a lot of sub-categories swept up into single categories under the proviso of minimising the home page and removing categories with low traffic. It was suggested that the more popular ones could have remained as sub-categories under a single upper level category but those who were focused on discussion topics only wouldn't be swayed. e.g. all the nature and wildlife / landscape / street etc sub-categories were plonked in one large container.

So it is that I am now unable to find any threads previously under e.g. 'Sigma Cameras' due to the Category list being 9 miles long and the peculiar Search function working in a rather inscrutable fashion, grump.