skypeforlinux-stable-bin was shown in previous post without AUR as source
I need help figuring why some packages appear as installed from AUR
Outdated AUR package can be replaced with skypeforlinux-bin
sof-firmware is needed on Intel laptops for digital microphone array - sofproject.org
Package would be an orphan on a desktop system
Creative Labs AE-5 cards use snd_hda_intel driver
Pamac seems to be working as expected for both scenarios