Notes. The same as Table 4, but now for our stage IV forecast configurations (left-most column; see also Table 2). Note that, as is discussed at the end of Sect. 4, we now quote statistics for the σ₈ − Ω_m plane for all configurations including γγ, given the increase in Ω_m constraining power, and reduction in non-linearity of the σ₈ − Ω_m plane, for stage-IV-like statistics. We also note that the $6\times 2\mathrm{pt}:n_z^{\mathrm{shift}}:\mathrm{do}\mathrm{nothing}$ forecast was unable to achieve convergence when sampling the posterior distribution; the parameter bias is quoted in this case for the MAP model (marked by an asterisk), and the FoM is accordingly omitted.