The Sonowood compressed beechwood fitting are gaining some traction among makers and repair people, partly because they will supposedly hold well using conventional hot hide glue, since they are not made of plastic resin, nor are they resin infused (like the ThermalWood Obsidian Ebony and some other ebony substitute products).
https://www.thestrad.com/accessories/products-november-2021-swiss-wood-solutions-sonowood-black/13770.article
They're pretty pricey though compared to some other ebony substitutes.
The US distributor:
https://www.vermontviolins.com/sonowood/sonowood-fingerboard-nut-amp-saddle-spruce-amp-maple-violin-44-k4xw5