[GeneD]

Except Hans Peter Janssens, does anyone know of any other baritones that have played Jean Valjean:)?

[curzon]

You can't really fit this sort of part into a standard classical vocal spec. I personally think that the best JVs have had baritonal qualities to their voice which gave the part the necessary gravitas but they also had an extended upper register (including a full voice b flat) which not many baritones (apart from Simon Keenlyside or Sherril Milnes (in his prime) could aspire to.
Similarly Javert's vocal quality is that of the bass-baritone but again has tessitura that most classical singers of that fach would quail at!

Sebastian

[Sieglinde]

Gyula Vikidál, the first Hungarian Valjean, is a baritone, too. (He was there from Hungary at the end of TAC.) Later he sang Javert - that fitted him better.