Some non-octave equal-step tunings as
 subsets of conventional equal temperaments:
--------------------------------------------

 "Alpha"  9th√3/2  78.0¢ steps
  15-ET /1 = 80.0¢ steps vs. 1170¢ octaves
  31-ET /2 = 77.4¢ steps vs. 1218¢ octaves
  46-ET /3 = 78.3¢ steps vs. 1188¢ octaves

 "Beta"  11th√3/2  63.8¢ steps
  19-ET /1 = 63.2¢ steps vs. 1212¢ octaves

 "Gamma"  20th√3/2  35.1¢ steps
  34-ET /1 = 35.3¢ steps vs. 1193¢ octaves

 "88-CET"  88.0¢ steps
  14-ET /1 = 85.7¢ steps vs. 1232¢ octaves
  27-ET /2 = 88.9¢ steps vs. 1176¢ octaves
  41-ET /3 = 87.8¢ steps vs. 1208¢ octaves
          
 "Bohlen-Pierce"  13th√3  146.3¢ steps
   8-ET /1 = 150.0¢ steps vs. 1170¢ octaves
  33-ET /4 = 145.5¢ steps vs. 1228¢ octaves
  41-ET /5 = 146.3¢ steps vs. 1198¢ octaves