Could 6 be a type of bottle brush [Callistemon] Yes I think 5 is a. Melaleuca possibly stypheliodes. Looks like the ones we have as street trees. Could 4 be something we refer as a common name "Shiney Molly" does it have some small red berries in autumn winter? I can't locate a botanical name. Makes a great hedge plant. No 3. Do these trees have small pale pink flowers in spring. The tree is evergreen? Liz
1-2 reminds me of laurel or false laurel. 5-6 Melaleuca, like Liz, I'd say it's the kind we have as street trees.