Here’s info I found on Amazon for five 2017 McAfee products.
A McAfee AntiVirus; B McAfee AntiVirus Plus, C McAfee Internet Security, D McAfee Total Protection, and E McAfee LiveSafe.
Defend against viruses and online threats – A, B, C, D, E
Steer clear of danger online with web safety tools – A, B, C, D, E
Device Protection - 1PC, up to 10 devices, 3 or 10 devices, 5 or 10 devices, unlimited devices
Remove junk mail before it reaches your inbox – C, D, E
Look after your kids with parental controls – C, D, E
Manage your passwords with True Key app – C, D, E
Protect your privacy with secure storage – D
Back up your important files and photos – E
For 2017 I'm using Total Protection 2016 Key Code $11.06 + $4.48 ship (Amazon).
For 2018 I already purchased Live Safe 2016 Key Code $18.95 + Prime free ship (Amazon).
To install older version (2015, 2016) software, Key Code should work (downloads from McAfee); where Online Code may not work (downloads from Amazon). If you buy 2015 or 2016 version, I believe the software gets updated to latest version during download/install, so you can save some money vs buying newest version.