Can get an authorization code sent to a spouses device to help unlock an iPhone

Keep in mind that the default for AppeID 2 FA codes is as an encrypted iCloud push notification sent to all of your trusted devices. So if you have any other Apple trusted devices (iPad, iPod Touch, Mac) you can also get the code on that device.

But without an Apple trusted device to receive the push notification, you would need to set up a trusted backup SMS capable or voice telephone number before the issue arises. You can use any SMS capable cellular number, regardless of device or operating system, or any land line voice number, or any VOIP service (Ooma, Skype, Google Voice).

yes if both of device are login with same apple id

If you both set up each-others cell numbers as backup trusted SMS capable numbers, you can each use each-others devices as a backup number for AppleID 2 factor authentication codes.

Two-factor authentication for Apple ID - Apple Support

Then you only have one number to receive the code and if you don't have access to that device for some reason, you can't sign in.