I think it has been pretty much covered so far, but I noted that you are apparently looking for a cuemaker that does not use ivory in ANY cue. My advise would be to buy a copy of the Blue Book of Pool Cues, and read through it. I can't remember off the top of my head who they are, other than Mariposa (who is, but the way, no longer making cues), who refused to use ivory, but I would believe that there would be mention of it in the content of each cuemaker bio pages.
I will give you credit for being more "conscious" with respect to this one individual topic (ivory and elephants), but it would seem that you are not consistent in your approach. Ivory is off bounds, but the leather used to make the tips, and possibly the wrap, is OK. What will you carry such a cue in? Virtually every case is made with leather, vinyl, or some other synthetic material. Probably 95%+ of these synthetic materials are made with petroleum based products. Ohh my, I am now jumping into the environmental area associated with drilling for oil and ruining the environment! How will you get to the pool hall? In a fuel powered vehicle perhaps, made mostly of metal? Oops, mining is a horrible thing.
You get the picture. Everything can be taken to extreme, and has been on this forum. What about the cuemakers religious convictions? Does that matter? The list is never ending.
Would have been alot easier if you simply would have said: Can anyone provide the name of a cuemaker who does not use ivory? Done, you would have had a short list and would have been happily on your way.
Good, luck, again I think the Blue Book can assist in pointing you in the right direction.