Hi, I don’t know how to respond to the question on lost (i’m a tumblr lurker), but I figured I could answer it as someone who has read DT and seen lost. There’s the man in black in the DT, and Locke/Jacob’s brother, who dresses exclusively in black and is a similar sort of character. There’s also some homages or callbacks to DT and SK because Carlton Cuse and J.J. abrams are DT fans. I wouldn’t say it’s based off of DT as much as the showrunners, as fans, wanted to reference their favorite works, and were possibly inspired.
the number’s 4 8 15 16 23 42 (and the sum 108) pop up over and over again, like 19.
It utilizes flashbacks/alternate timelines like in book three
The purgatory of the flash-forward world waiting for them to be ready/ to leave together, and the island being a place for them to become whole, and roland’s entire existence over the series being repeated until he is ready to enter the door at the top of the tower.
Made up brands/companies that feature prominently (mr. cluck’s chicken shack, Dharma vs. Nozz-a-la, NCP)
Then some characters reading or referencing SK books, or just works like tower or beam popping up in random places.
Hope this was helpful! Sorry I don’t know how to answer directly.
This is a fine way to answer for so much information, thankee-sai!
I hope this helps!