I'm going to say none of above (if pocket doors not an option).... I see french doors in new construction offices all the time and all I can attribute it to is "what everyone is doing" because from a practicality issue it makes no sense to me. Most people's offices are for working in and are functional and private and often times, messy! Why would people want that to be "open" to everyone? You certainly don't want your guests to see it and it is even unappealing and even stressful to look at a space covered in piles and clutter. I know everyone's office is not this way but trust me :), most are not the tidiest rooms in the house! Put solid doors that offer noise control and privacy. Also gives you other options if for some reason it needs to serve another function at any time- i.e. guest room.

I think frosted glass would be nice here. here is our pantry doors, angled wall between kitchen & Foyer [houzz=[https://www.houzz.com/photos/new-build-gabe-phvw-vp~126230138[(https://www.houzz.com/photos/new-build-gabe-phvw-vp~126230138)] the doors open into the pantry & is a spilt bifold our barn door is in between our mud room & kitchen enterance [houzz=https://www.houzz.com/photos/new-build-gabe-phvw-vp~135362262] All our interior doors & window trim, baseboards are done alder & the ceilings are T&G fir, if you would like to see more, go to my page, idea books- New Build/Gabe.

Ah, missed that part in the OP. I wouldn’t consider that a sliding BARN door (which I would agree might look mismatched), and I think a sliding door would look fine if it’s in the same style as the adjacent door. I make that distinction because so much of the barn door hate has to do with it not fitting the style of the house, when in reality it’s just a sliding door that can be any style! You can use white hardware (or whatever color would match closest to your walls) to minimize the distinction or if you’re willing to spend a little more, artisan hardware sells a concealed hardware, so it would essentially look like a standard door sans the hinges (unless you wanted to add them for cohesion).

Allison, I can’t help you with the framing part but it looks like your situation is similar to my office dilema. Maybe this post will give you ideas. I have a converted sitting room to office that I needed doors to cover a 60 inch opening. I couldn‘t do a pocket door due to the walls being finished and electrical in Them. I didn’t want two French doors swinging INTO the room and taking up precious floor space. I settled on french doors hung up on a barn door track. I don’t care that barn doors are ”going out of style”, I love them. We mounted them inside my office as they would be open most of the time. And closed during conf calls. We chose glass because my husbands office which is next door to mine has French doors and we wanted to be consistent. I dealt with the issue of the 1” gap between the trim and the door by adding a combinEd two pieces of molding to sit in the outsides of the doors to meet up with the door trim -and ended up with a 1/8-1/4“ gap. Essentially I added trim to the outside of the door. You can’t see it from the hallway, and from the office it just looks like a 1/2” trim piece. I added trim above the door (to decrease the height of the opening) to hide the rolling bar from the hallway. And I added floor guides to keep the doors snug to the wall where I want them without scratching the trim or the door. These pictures are a few weeks old and don’t show the finished install, but gives you an idea of the Work in progress. I can’t post current ones as I’m enameling the cabinetry at the moment. My advice to you is to keep looking and doing research for a barn door solution that works for you, if that is what you want. We scheduled our handy man to come out and install the doors, but he is booked out til August. So my husband and I hung them ourselves a few weeks ago ((work in progress- you can see in the pic the electrical switches on the wall. In this case the door trim gives us enough clearance to slide over them. I found that I can put a 1/2” thick painting to the right of the doors. I place the white cabinet a few inches from the wall, in front of the left door As I needed the space and makes use of the wall. The left door is able to snuggly slide behind it. )) It took several hours, but w patience and lots of double checking math, it worked for us.