I’m a big fan of the Oathmark Elves, and of GW’s Tree creatures. Looking at the Elf list, I was thinking of using the following:
Shield Watch. Oathmark Elves with Shield and Swords.
Forest Guard, Oathmark Light Elves with Spears.
Hunters of the Wild, GW Dryards.
Forest Shamblers, GW Kurnoth Hunters with melee weapns.
Bolt Thrower, GW Kurnoth Hunters with Bows.
Tree Herder, GW Treelord.
Tallspears, Archers, Gladestalkers, and Sea Guard are easy to build using the Oathmark Elf range.