low contrast developers -
I shoot Lith as unsharp mask material under the enlarger, and develop it in a formula from the darkroom cookbook, called T/O -xdr4, or something like that. Very dilute with barely any developing agent in 1l of solution. , as using v dilute Rodinal would also do. I recall calculating the EI at arouind 8.
There is also a Kodak B&W High Contrast slide film, now obsolete, that was Kodlith cut and would on a 35mm cassette. There is a data shet on it on the Kodak site, but the development instructions are geared at getting no grey scale. Development in low strength solutions will yield a grey scale neg, subject to the limitations of the film already mentioned.