Notes. (i) Cluster name; (ii) optical redshift from cross-correlation with the NED; (iii) photometric redshift from follow-up with TNG (one case, marked with ^∗, obtained with VLT archival data); (iv) X-ray redshift; (v) reference for optical redshift; (vi) name of the optical counterpart (cluster); (vii) name of the optical counterpart (galaxy); (viii) name of the X-ray source as in Paper I. The format of the name of the sources is SWXCS JHHMMSS+DDMM.m. This new designation supersedes that used in Paper I, and it has been officially accepted by the IAU register of acronym. References for the redshifts from the Literature: ¹Shectman et al. (1996); ²Colless et al. (2003); ³Adelman-McCarthy et al. (2006); ⁴Wen et al. (2010); ⁵Adelman-McCarthy et al. (2008); ⁶Koester et al. (2007); ⁷Abazajian et al. (2005); ⁸Hao et al. (2010); ⁹von der Linden et al. (2007); ¹⁰Huchra et al. (2012); ¹¹Gal et al. (2003); ¹²Adelman-McCarthy et al. (2007); ¹³Estrada et al. (2007); ¹⁴Owen et al. (1995); ¹⁵Struble & Rood (1999); ¹⁶Schwope et al. (2000); ¹⁷di Nella et al. (1996); ¹⁸ redshift obtained from Literature by the NED Team prior to November 1992; ¹⁹Szabo et al. (2011). The source marked with ^∗ has two other cluster counterparts at distances larger than 1 arcmin from the X-ray centroid: ZwCl 1234.0+2916 and WHL J123620.6+285756. These counterparts are not considered here.