I've not used any hard wax oil finish. I'm surprised reading this [1] though that it offers "Great wear-, water- and heat resistance". But I guess that's from the company also claiming that Monocoat only takes one coat. But, what I'm understanding from that link is also that maybe the curing accelerators have VOCs so maybe the hard wax oils without accelerators don't have the VOC content (?)
[1]: https://www.rubiomonocoatusa.com/blogs/blog/what-is-hardwax-...