I don’t know there are more similarities than I initially thought:

• a lot of mystery of the others / whitewalkers
• a lot of politics around leadership and vying factions
• some mystical element around saving the world
• a complete flop on wrapping up the ending in a meaningful way

I mean it’s been forever since I watched Lost, so my recollection may be off, but they’re not a dissimilar as you’d think.