I would like to have ls%-rtls% in main leaderboard page because they are not meme categories just parts of the any% or nmg%. And those categories might gain more popularity too.

This has been brought up time and time again, and the consensus has always been to not add them to the main leaderboard because they're just parts of existing categories and some don't even start from new game. There's multiple threads about this on the SA forums so if you wish to see the reasoning behind not adding them to the main board feel free to do that.

Okay i guess i understand it but it would be nice if there was even mention or link to extensions category page because IL runs are also in main page and thanks for decent answer.