The 2-8-0 plows were narrower at the bottom than the K-27 plows. The latter were squared off on the sides to clear cylinders and valve gear. Several C's and T's had plows in the thirties of the small butterfly type on both the RGS and the D&RGW. RGS T-19's 22 and 25 and C-19 40 come to mind as does the D&RGW T-12 169 and C-19's 344 and347.
The RGS Galloping Geese were also fitted with butterfly plows as well. This kept the snow cleared daily just like the Rio Grande passenger trains but they were not effective in any heavy snow. Anything above six or so inches would require a locomotive to 'break trail' for them.