The following species all have leadwood as all or part of one or more of their common names and unless otherwise stated with the wood, I have no idea which of them are represented on this page. The colors are hugely diverse on this page, suggesting that several or all of the possible species are represented here, but I have no idea which.
Combretum hereroense
Combretum imberbe
Krugiodendron ferreum
Reynosia septentrionalis
web pics:
plank and closeup
planks --- I don't have a clue about whether or not these colors are even possible with the species that use this common name.