If I remember correctly, Silverstone has some sort of bullshit patent on 90 degree mobo... I could be wrong though, that's just what I heard somewhere. In that case, they're the only manufacturer that makes cases like you described...
I forget which case this is.. but it's definitely a caselabs case.
BUT you have to customize it yourself. (Some of their cases allow you to change the motherboard orientation.) I'm a Silverstone FT03 owner. (Still currently use it) and honestly in the mATX sector. Silverstone is the only OEM that has a 90 degree orientation motherboard layout mATX case. you aren't going to find them anywhere unless you go silverstone.
No. Caselabs primarily makes full blown E-ATX cases that have the holy grail support for Water-cooling. Silverstone is the the only OEM to have a mATX case with a 90 degree motherboard layout orientation. no one has bothered to make an mATX case with the 90 degree orientation. and honestly the only reason i think it is, is because it would look too much like the FT03.. that case is so unique, i'm pretty sure anyone else would take backlash if they made a case like that.