Updating OS X to NOT the latest version [duplicate]

I have a macbook that is running OS X 10.8 (Mountain Lion); for various compatibility-related reasons I would like to upgrade the system, but not to El Capitan. Yosemite (OS X 10.10) would be dandy. The App Store, of course, only offers an upgrade to El Capitan, currently the newest OS X version.

I know that it is possible to restore a computer to the OS it had prior to an upgrade, but is it possible to upgrade to a (never-seen before) OS version that is not the latest available?

Edit: This question is related (but only if Yosemite had been downloaded via the App Store in the past).

Solution 1:

You can download old versions on the Apple website: https://support.apple.com/downloads/macos

Edit: This is where you will find installers (going back to El Capitan) https://support.apple.com/en-us/HT201372

You can also install an older version through the Mac Store without the need to create a bootloader. You can find the links for the different versions here: https://support.apple.com/en-us/HT211683

Solution 2:

Only if you know someone who has it in their App Store Purchase History who would be willing to download it for you.

Drop it in your Applications folder & run it; it will directly update to 10.10.5, the latest version.

Alternatively, if you have a Family Sharing account with anyone who has it in their history, you could download it directly.