If you down load, and build, fuchsia, the fx cmd can list boards and products.
I recall a early goal of fuchsia was to be able to build fuchsia with fuchsia, I wonder when the workstation build will be up to that stage.
fx list-boards arm64 as370 chromebook-x64 * qemu-arm64 qemu-x64 toulouse vim2 vim3 vs680 x64 x64-reduced-perf-variation
fx list-products bringup core terminal workstation