Shafer Design Ltd. In coastal temperate regions of Australia this look can be achieved using Waterhousea floribunda GREEN AVENUE Pbr or Acmena smithii SUBLIME Pbr - also good options where container size is limited.
Cool colours and beautiful textures with small leafed Westringia and Santolina(?) by Secret Gardens of Sydney. Not only do fine-leaved plants withstand heavy coastal winds, but they look great when mass planted adjacent to other fine-leaved plants.
Magnolia 'Little Gem'-easily controlled to te height range that suits your requirements ben. Will generally form a clipped block of foliage over time though not as dense as the lilly pilly we chatted about. *Could be used as a "pleached" hedge(st