What is the distance between the nearest white dwarf, neutron star and black hole? What is the name of the distribution? Where is it?

1 The brightest star in α-Sirius Canis one of the six stars in the Great Ellipse in winter. Its companion star is the first confirmed white dwarf star in the whole sky and the closest to the earth.

This neutron star is located in Ursa minor and is now named "Calve La" by astronomers. If further confirmed, Calfra will be the eighth isolated neutron star, which has no supernova remnants and no stars and radio waves around it.

The nearest black hole is about 1600 light-years away from the earth. This black hole is located in Sagittarius, and it forms a binary system with an ordinary star numbered V464 1SGR.