I think that if anyone were to offer an Azo-like contact printing paper, it would have to be one of the smaller producers. The market simply isn't big enough for Ilford - or Kodak, for that matter.

Bergger already have a contact paper (which Michael A. Smith will tell you "just isn't Azo" - which is correct), so they probably won't make one.
MACO are market leaders in X-ray photography, and produce film and papers we can use as an "afterthought", since they're making emulsions anyway.
EFKE films are the old ADOX films, not very famous for their papers?
The "best" candidate might be Fotokemika Zagreb, makers of Varycon and some other things. Or maybe Forte?