I agree with Roger, we need to remember that these films are still available.
You might also give neopan 400 a try, in xtol.
Unfortunately, neither neopan 400 or delta 400 are available in sheet form.
But if you like TMY2, and want to keep shooting it, and can afford the investment, why not just purchase a lot of it and be happy.
If grain is the issue with the traditionals, well then consider pyro development.