Breaker, this may help:
Left-Right: Perry Sudanese regular, Foundry British NWF Officer, Copplestone Sikh, Foundry Sikh, Foundry DA Zande, BTD Zulu
The Foundry Boer War figures are an exact match for their NWF and I put the others in so you can look at their ranges for anything that might suit your project. Sorry the ruler hasn't come out very well, but if you squint you can just make it out.
Must finish painting those Sudanese
cheers,
Ian