Census of the previous results of CT-AGN candidates (selected from Ricci et al. 2015) having z < 0.01 with archival NuSTAR data, analysed by the Clemson-INAF group: Marchesi et al. (2018), Zhao et al. (2021), Torres-Albà et al. (2021), Traina et al. (2021) and including our analysis. The sample of these CT-AGN candidates are marked as large circles. In the parameter space of average vs LOS column density, grey-dashed lines drawn horizontally and vertically marks the CT column density threshold. The brown-dashed diagonal line (i.e the “Line of Homogeneity”) identifies an homogeneous obscuring material distribution. The region within the pink dot-dashed lines is used to classify the number of sources with homogeneous torus. We also included the sample of 74 Compton-Thin sources from Zhao et al. (2021), shown as small grey circles.