Hi,
If I had to put money on my wood knowledge, I would come up with the next answers:
#1 Plantation Mahogany (80% sure) The thing wich makes me doubt is the 'purpleheart' like grain of this square. But is also common in plantation woods. Plantation Mahogany is very reddish when still wet. Straight grained wood ideal for flooring but not very unsuitable for cuewood as it tends to crack rather easily when dried too quickly. Takes a long time to airdry but will deliver exquisite furniture wood.
#2 Ziricote (99% sure). When dried, it will darken a little more. Ideal cue wood. Dick is right when saying that it's provenance is middle and south America, but the British, the Dutch, and the French used to transport a lot on the vaissals on the long journeys in the 1500's 'till the 1800's as ballast and spare wood (even the masts were sometimes replaced by Ziricote when the original would snap during a storm or battle). A lot of the wood was thrown overboard in the Indies back then and some of it started to grow again.
#3 Asian Ebony (99% sure). It is lighter than most ebony species but is more flexible aswell. Many inhabitant use the boards and logs to build bridges. The cut-offs are often used to carve souvenirs. It can be used in cues, but it bonds rather difficultly with epoxies.
#4 Merbau (90% sure). This square is pretty knotty but it is used a lot in Europe as window frame wood or construction wood. When dried, it cracks fairly easy.
#5 Plantation teak (97% sure). This wood grows so quick (more than a foot a day in optimal conditions. some trees are being cut down just after 6 months they have been planted as little shoots) It is very water resistant and won't glue at all. The old growth teak is very heavy, show many growth rings and looks more yellow than the plantation variant.
Tom Penrose