Well, I probabaly did the same searches as you, and I didn't find the majestic Palm. I did a search for palms on the list of non toxic plants and alot of palms are there.

I found 2 palms on the toxic side. Dracaena Palm and Sago Palm.

I even tried to search by the latin name and still no luck.

Sorry, hopefully something I did may help, but I have the feeling you have probabaly done all of this.

Good luck. If you find an answer please let me know. Not that I have the plant, but I searched and now I am interested.