I guess? I'm not sure how to scale things and haven't seen all the shows (but know tons about them all), but I guess so? 08th MS team is generally touted as the most realistic of all the Gundam shows since it's basically a Vietnam War movie with added giant robots during the first half of the story, and then 0083 and then 0080 and then... I guess probably Wing simply by virtue of having the least "space magic" if we're judging by aspects other than the robot, however if the transhumanist space opera aspect is disregarded in favor of judging based only off of the robots then I guess I'd say most of the Early UC series comes next?
Also er not really what he's asking for I think but there is a thing the Universal Century timeline that after 0083, in all the shows that come afterwards armor stops being useful on anything other than huge mobile armor because beam weapons which just punch a hole in anything they touch have become commonplace. This results in a much larger emphasis on speed over weight along with special shielding like anti beam coating and i-fields until things come full circle in the Late UC Era at F91 when portable beam shields have been invented and mobile suits have shrunken down and armor has become so thin that they start using mass drivers and physical melee weapons again since they are less likely to cause a catastrophic colony breach. Patterns from this sortof got mixed and matched during the AU shows which make it hard to differentiate the kind of thing he's asking about.
...also a random funfact just cause I like giving exposition and am feeling self indulgent, in the Universal Century timeline until the invention of the Beam Rotors in Victory Gundam there are no mobile suits capable of sustained atmospheric flight without transforming to a waverider jet form save for the Gouf Flight Type (which is a flying death trap), the Byarlant (Which has an incredibly weird body shape that makes it incapable of using standardized weaponry other than that's built directly into its body), and the Xi Gundam (which is the largest UC Gundam save for the Psycho Gundams as its flight ability comes from mounting the propulsion system used in space battleships onto its body).