TON 618:

Mass: Approximately 66 billion solar masses. Location: In the constellation Canes Venatici, part of a quasar. Distance from Earth: About 10.4 billion light-years.

IC 1101

Mass: Estimated around 40 billion solar masses. Location: In the constellation Virgo. Distance from Earth: Approximately 1.07 billion light-years. Notes: IC 1101 is one of the largest known galaxies and its central black hole is correspondingly immense.

Holmberg 15A:

– Mass: Approximately 40 billion solar masses. -Location: In the Abell 85 galaxy cluster, in the constellation Cetus. -Distance from Earth: About 700 million light-years.

SDSS J140821.

Mass: Estimated to be around 34 billion solar masses. Location: In a quasar in the constellation Virgo. Distance from Earth: Approximately 12.2 billion light-years.

S5 0014+81

Mass: Approximately 40 billion solar masses. Location: In the constellation Cepheus. Distance from Earth: About 12.1 billion light-years.