Even if Luke's genealogical record is of Mary, it is from Nathan (son of David) when the Messiah is prophesied to come from Solomon.
As for the "difficulty" of Jeconiah, it was through Joseph's lineage that Jeconiah came and because Jesus was not a blood descendent of Joseph the prophecy was strictly fulfilled in that if He had been Joseph's natural son, He could not have come to the throne, but becuz He was Mary's natural son, He could inherit the throne through her marriage to Joseph becuz of her relation to Nathan. So these "difficulties" only confirm the accuracy of the scriptures.
The 1Chron. reference was strictly speaking of Solomon's rule of the nation in life which should not have been becuz he was not first in line. However, God chose him over David's other sons. This did not refer to the coming Messiah. Some of the scriptures which speak to the Messiah descending from David are 2 Samuel 7:12-19, Psalms 89:3-4, 34-37; 132:11, Acts 2:30; 13:22-23, Romans 1:3; and 2 Timothy 2:8. These were fulfilled through Mary.
But Solomon's throne is said to last forever, NOT Nathan's. From Abraham, to Solomon they were promised the eternal throne. These verses are often quoted in reference to the Messiah. And Luke does not say that Mary's genealogy is being recorded but Joseph's.
Luke 3:23 doesn't mention Mary at all. If it was her genealogy it should mention it shouldn't it?
Question for you, what do you think Christ is?
I am not taking the mickey, I am curious as to what you consider Christ is
I don't understand your question.
But in Luke 3:23 it says Joseph is the son of Heli, NOT Mary.