The first link is an interesting one, IF I could read Dutch.
I use Dip'N Grow, which is Indolebutyric acid. It appears to give me at least twice the rooting that Rootone gave me. By the way, Rootone is Naphthaleneacetic acid.
Rhizopon appears to have three different formulae, Indolebuteric acid, Naphtylacetic acid, and Indoleacetic acid. Note there is a spelling difference but I assume that two of Rhizopon's formulae are the same as/similar to the Dip'N Grow and Rootone. formulae.