If you wish to view bills under multiple names as a single supplier, it is easy to merge suppliers.

To combine bills being listed under different supplier names, on the Journals tab, go to any expenses page, then go to the icon at the top right.  Then select ‘Merge/Rename Suppliers.’

Tick the boxes to the left of the suppliers you wish to merge.

The last supplier you select will be the name that survives the merge - the others will be nested under that one.

To unmerge, see How do I unmerge suppliers?