This size and shape enclosure is suited to small, climbing lizards. While you could keep say a pair of Knob-tailed geckos, being terrestrial only, the height of the enclosure would be totally wasted. A fake-rock wall backing and maybe sides with ledges and crevices, or appropriate braches or vegetation will allow climbing species to make use of this space.
Climbing geckos offer the widest choice - Strophurus, Odeura, Amalosia, Nebulifera, Saltuarius, Phyllurus and even maybe Cyrtodactylus. From the skinks you could choose small Egernia such as the Pygmy Spiny-tailed, Rock or Tree Skinks, or rock-dwelling Liopholis species, but nothing bigger. Like it is not large enough for an adult Pink-tongued. In terms of monitors even the Pygmy Mulga and Stripe-tailed really need more space, while the Short-tailed Pygmy is, of course, a burrower. Forget the Pygopods but there are a few possibilities amongst the dragons. Mountain Dragon, Jacky or Burn’s and Western Bearded would be OK if suitably furnished. It could also be used for a Southern Angle-headed or two, if you know what you are doing.