The picture on the left is Fotokemika Varycon.
The right hand side picture is Foma Fomabrom Variant 112, processed in Fotospeed LD20 or Arista Lith (powder or liquid). I use negatives of very high contrast.
Usually I use 100ml Part A to 1,400ml water, 100ml Part B to 1,400ml water, mix those together. Add 800ml old brown for a total gallon of liquid. Then I season it with two sheets of 8x10 paper with the lights on until they are completely black.
Developer at 75 degrees Fahrenheit or about 24 degrees Celsius.
The film used doesn't matter, because it doesn't really impart much of its character to the print. It could be Acros and it could be Delta 3200, and it wouldn't really matter. Just expose and develop it to high contrast.
The print has been toned in both Kodak Sepia II warm and rapid selenium toner.