Don’t those with minhagim from some parts of Oberland have a later shkia than the most common zman? I recall initially when they came to America post-WWII they started Shabbos later (some still do even today) but later agreed with Rav Aharon to use the earlier zman in order to have a unified zman rather than different kehilos starting Shabbos different times in the same neighborhoods.
If so, b’shas hadchak could not those from the aforementioned kehilos utilize their later shkia to light?