Why do new champions get priority on skins while older champions don't

So, with new skin releases including pool party zoe, ssg xayah, ssg rakan, and ssg Taliyah. Only one of those champions really needed another skin, Taliyah. Seriously why do zoe, rakan, and xayah have more skins than aurelion, kled, illaoi, Taliyah, Camille, and more while the latter champions have been out longer. If your argument is that it is easier to make skins for those champions that might be true for some but I can come up with skins off of the top of my head and that's not even my job. For example: pool party aurelion with him being an eel and having his stars be like pirahnas, winged hussar kled, weight lifter illaoi when the Olympics come around, gymnast Camille , with her e and ult being like balance beams. If you say the reasons why these champs aren't getting skins is because their player count is smaller could be right but have you ever considered that these champs aren't getting played because they don't have any skins? I think this way because if I get a skin in a hextech chest of a champion I don't have I might consider playing the champ and see if I like them or not.

Thanks for listening!