The following comics, are each introducing a current or former member of the 616 Guardians of the Galaxy. Thus I might read them.
- 1945: Young Allies Vol 1 16 - Hercules Panhellenios (Earth-616)
- 1961: Fantastic Four Vol 1 1 - Benjamin Grimm (Earth-616)
- 1962: Fantastic Four Vol 1 5 - Victor von Doom (Earth-616)
- 1962: Amazing Fantasy Vol 1 15 - Eugene Thompson (Earth-616)
- 1962: Tales of Suspense Vol 1 39 - Anthony Stark (Earth-616)
- 1963: Fantastic Four Vol 1 18 - Kl'rt (Earth-616)
- 1965: Fantastic Four Vol 1 45 - Lockjaw (Earth-616)
- 1967: Fantastic Four Vol 1 66 - Adam Warlock (Earth-616)
- 1968: Marvel Super-Heroes Vol 1 13 - Carol Danvers (Earth-616)
- 1969: Marvel Super-Heroes Vol 1 18 - Vance Astro (Earth-691)
- 1973: Iron Man Vol 1 54 - Heather Douglas (Earth-616)
- 1973: Iron Man Vol 1 55 - Arthur Douglas (Earth-616)
- 1973: Avengers Vol 1 112 - Mantis (Brandt) (Earth-616)
- 1975: Strange Tales Vol 1 180 - Gamora Zen Whoberi Ben Titan (Earth-7528)
- 1976: Nova Vol 1 1 - Richard Rider (Earth-616)
- 1977: X-Men Vol 1 107 - Kallark (Earth-616)
- 1978: Captain America Vol 1 217 - Wendell Vaughn (Earth-616)
- 1979: Micronauts Vol 1 1 - Bug (Insectivorid) (Earth-616)
- 1979: Avengers Vol 1 181 - Scott Lang (Earth-616)
- 1979: X-Men Vol 1 129 - Katherine Pryde (Earth-616)
- 1982: Incredible Hulk Vol 1 271 - Rocket Raccoon (Earth-616)
- 1983: Thor Vol 1 337 - Beta Ray Bill (Earth-616)
- 1985: Avengers Vol 1 257 - Nebula (Earth-616)
- 1994: Captain America Vol 1 434 - Jack Harrison (Earth-616)
- 2000: Marvel Boy Vol 2 1 - Noh-Varr (Earth-200080)
- 2004: Captain Marvel Vol 5 16 - Phyla-Vell (Earth-616)
- 2004: Thanos Vol 1 8 - Peter Quill (Earth-616)
- 2007: Annihilation: Conquest - Starlord Vol 1 1 - Groot (Earth-616)
- 2008: Guardians of the Galaxy Vol 2 1 - Guardians of the Galaxy (Earth-616)
- 2013: Age of Ultron Vol 1 10 - Aldrif Odinsdottir (Earth-616)
- 2016: Captain America: Sam Wilson Vol 1 7 - Avril Kincaid (Earth-616)
- 2018: Thanos Vol 2 13 - Frank Castle (Earth-TRN666)
- 2018: Infinity Countdown Vol 1 4 - Phyla-Vell (Earth-18897)
- 2019: Guardians of the Galaxy Vol 5 12 - Arthur Douglas (Clone) (Earth-616)