Off-road / gravel / mud fixed-gear bikes (whisper: tracklocross)

I have been collating a list of 'practical' SS frames and this thread seems like a good place to share it. By 'practical' I mean disc brakes (sorry), clearance for decent size tyres and mudguards, and maybe even a rack—so basically a modern singlespeed tourer/gravel bike. Inspired by abr's list of SS disc framesets with decent clearances.

Loosely categorised below. (Not including bikes that aren't available frame(set)-only or SS off the peg, as I wouldn't expect someone to buy a new complete geared bike and then remove all the components.)

Road, touring, cyclocross

• All-City Nature Boy (eccentric BB)
  
• All-City Super Professional Singlespeed
  
• Bombtrack Arise 2
  
• Bombtrack Outlaw
  
• Brother Big Bro
  
• Genesis Day One 10
  
• Kona Private Jake
  
• Niner RLT 9 (eccentric BB)
  
• Norco Threshold Aluminium (2019; eccentric BB)
  
• Octane One Kode
  
• Omnium CXC
  
• Salsa Marrakesh
  
• Salsa Stormchaser
  
• Soma Wolverine
  
• State Thunderbird
  
• Surly Ogre
  
• Surly Straggler
  
• Transition Rapture
  
• Trek Crockett Disc 2019 (but 2020 model has vertical dropout)
  
• Trek Checkpoint ALR or SLR
  
• Velo Orange Neutrino (mini-velo)
  
• Zoulou Kulula
  
  

See also: SSCX; gravel

Off-road touring

• Genesis Longitude
  
• Salsa Fargo (off-road touring)
  
• Speedvagen GTFO
  
• Stooge Mk4
  
• Surly ECR, Troll, Lowside, most other Surly frames
  
• Trek 1120
  
  

See also: SSMTB. Fat bikes often have sliding dropouts, too.

Discontinued

• Bianchi Roger
  
• Charge Plug 1 Disc
  
• Cotic Roadrat
  
• On-One Pompetamine
  
• Pinnacle Dolomite SS
  
• Pinnacle Arkose Alfine (eccentric BB)
  
• Vitus Dee 29 VR
  
  

I suppose the harder thing to find is an appropriate disc fixed rear wheel?