There are shittos that hold of that later zman. (I believe it includes Rabbeinu Tam.)
But seriously excludes the Mishno Beruro, who is incredibly emphatic about how critical it is to pray Mincho [Not just commencing but terminating the Amido] prior to sunset.
Yet please note however, that the Mishno Beruro makes no major issue about Maariv BiZemano V Early Maariv, nor of Schacharis before sunrise V Schacharis after sunrise.
Ordinarily, when confronted with 2 scenarios, 1 being with a Minjan but at a worse Zeman V a better Zeman b’Yechidus, praying at the Minjan always overrides the other preferable factor.
However:- 2 exceptions:- a) Mincho must be before sunset even B’Yechidus rather than with a Minjan after sunset; b) If someone is going on a long distance journey, even if he will reach his destination before the end of the Zeman of the current Tefiloh and be able to pray that current Tefilo at his destination with a Minjan, he must still pray that current Tefilo prior to setting off on his journey even if b’Yechidus.
However, even in the case of Friday Chanukah Mincho, it is better to pray with a Minjan after candle lighting than before candle lighting b’Yechidus.