Few thoughts:
Just because a speaker is sealed or front ported does not mean it performs well near wall. For example, the front ported Raidho X1/XT1 is awful near wall.
I would look at Vivid Kayas. The new S12 will eventually have a wall bracket. I have been using Kaya 45s less than a foot from the wall and they perform surprisingly well. The Kaya line is certain to excel in this application.
A bit pricier and has to be on the integrated stands, but the Wilson Benesch Vertexes are bottom ported and excel with near wall placement. I have these side-by-side with the Kaya 45s and my own speakers.
Perlisten S4b is a sealed, three way design. The floorstanding S7t is the best measuring speaker ever over at Audioholics and they are using the same technology (klippel) to optimize performance of all of their speakers and subwoofers for that matter. This is a very neutral, high performing speaker.
Verdant Nightshade and Blackthorn - despite being rear ported, I have tested using a port bung (foam plugs) and was very pleasantly surprised at how well the sound held together with placement 6" from the wall. You will lose about 10-15hz in bass response so a subwoofer would be critical. I think the Blackthorn is probably the better speaker for your taste if you like Kef and these are available for 30 day in-home trial.
The Magico A1 is a great speaker. I have been surprised to find the A line is a bit less bright than the S line. Ran into an issue where a relatively neutral amp delivered to warm of a sound with an Aqua DAC and we have to move to a more forward Musical Fidelity to drive a pair of A3s. I have not listened to these in a near wall application. I would look to see if someone has to be certain it will work.
Wilson TuneTot - they have a special port design to ensure optimal performance near wall. I have listened to these driven by a naim uniti atom and was pleasantly surprised. It is what you would expect from a little Wilson.
Audiovector R1 has an amazing AMT tweeter that is more natural sounding that you would expect. This might be the most neutral sounding speaker on the list. Has an aluminum baffle and some other interesting tech that makes it a very appealing design.
I am not a huge fan of the Kefs and will abstain from commenting. They are simply not to my taste.
These are all very big sounding speakers. Only the Perlistens Audiovectors are made from MDF/HDF and the AVs have an aluminum baffle. All the others use advanced cabinet materials which really help in terms of delivering a bigger sound.
I am a dealer for Raidho, Vivid, Wilson Benesch, Perlisten and obviously Verdant. I have no relationship with Kef, Magico, Audiovector or Wilson