Does it exists or really really hard to find?
There is a 5W carbon compositor mentioned in RS485 Transceivers Sustain ±60V Faults – Design Note 203
Indeed, it looks like they are hard to come by. HPC5C560K from KOA Speer might be a suitable option. The datasheet says "non-inductive", but there isn't a spec on how non-inductive.
Design Note 203 is pretty old, have a look at the circuit on the back page of the LTC2862 datasheet for an alternative approach: