Notes. ⁽¹⁾Angular resolution after smoothing Band 3 and 6 images to a matched spatial resolution of 2700 au. ⁽²⁾Standard deviation of the noise level in Band 6.⁽³⁾ Equivalent mass to the standard deviation in Band 6, using Eq. (4), assuming $S_{1.3 \text{mm}}^{\text{peak }}/\left({\Omega }^{1.3 \text{mm}}\times B(20 \text{K},v)\right)\to 1$.⁽⁴⁾Number of sources in common between the getsf and GExt2D extractions. ⁽⁵⁾The total number of sources differs from the direct sum per field because two pairs of fields host sources in common. In the getsf extractions, sources 3, 20, 30, and 31 in W51-E correspond to sources 3, 22, 38, and 108 in W51- IRS2, respectively, and sources 10 and 46 in W43-MM2 correspond to sources 2 and 37 in W43-MM3, respectively. In the GExt2D extractions, sources 29, 32, and 46 in W51-E correspond to sources 21, 11, and 28 in W51-IRS2, respectively, and source 14 in W43-MM2 corresponds to source number 4 in W43-MM3.