Disc to Digital confirmed titles.

Specific to Xbox One, Digital allows for play without a disc present. It prohibits resale. Games purchased digitally can often times be refunded with a call to Live Support. I did this for the Xbox One version of the Destiny Digital Guardian Edition after
the news came out about the buy on 360, get it on Xbox One for free.

Disc-based games must have the disc in the console to be played. They can be resold. Disc-based games routinely go on sale unlike Digital, though MS has been better about sales on digital titles as of late.

There is no "size" difference as both digital and disc titles deposit the same bits on to the Xbox One HDD. In fact, installed-from-disc titles can be converted to digital titles (and thus obviate the need for the disc) by simply buying the digital version
of an installed-from-disc title. No re-downloading is required.

Is it disc or a digital title? If it's a disc I might consider it.

Do these titles come with a disc or is this digital? I'm really looking for titles from the MS store that are on disc. Thanks for your help.

All games are installed to HDD (Internal or external USB) and are run from there regardless if they were purchased on disc or digital. Any games that you previously purchased on disc which are now included in GamePass no longer need the disc inserted to
confirm your purchase license as long as the title remains in GamePass as the system knows you are entitled to play it based on your GamePass subscription.

It remains to be seen what happens when a previously purchased disc title is removed from GamePass. Some of my disc titles fall into this category of having been added to GamePass however I can't comment about that leaving GamePass experience until it happens.

Is this a game you only bought on disc? As you can't play disc games on an all digital console. You will need to buy a digital game version to play on the all digital console as it uses the disc to still confirm you own the game.