M105 (NGC 3379, UGC 5902 and others) is large elliptical at the right. The most recent (http://simbad.u-strasbg.fr/simbad/sim-ref?bibcode=2016AJ....152...50T) reference puts this one at approximately 36.6 million light-years away in Leo.
NGC 3384 (NGC 3371?, UGC 5911 and others) the odd-looking spiral at the center. This one is approximately 32.7 million light-years away.
NGC 3389 (NGC 3373?, UGC 5914 and others) is the blue spiral at the left. This one is approximately 66.6 million light-years away.
All of these are part of the M96 or Leo I group of galaxies. While the members list appears to be vague, a table of some of them can be found here - https://en.wikipedia.org/wiki/M96_Group.
Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 12x300s – 60 minutes each – binned 2x2
420 minutes total exposure – 7 hours
Imaged December 29th, 2019 and January 3rd, 5th and 6th, 2020 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.
This image was taken under extreme conditions. January 3rd was very good. I managed to capture asteroids down to magnitude 20. The RGB captured on January 5th and 6th was during terrible conditions but good enough for LRGB.