/usr/share/apt-xapian-index/aliases/popular-apps is in apt-xapian-index 0.45.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | # Aliases expanding names of popular applications
excel XToffice::spreadsheet
powerpoint XToffice::presentation
photoshop XTworks-with::image:raster
coreldraw XTworks-with::image:vector
autocad XTworks-with::3dmodel
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