You could pool your AF and/or EK miles in Alaska (as explained upthread) as Alaska is partners with both AF and EK.

Other programs which similarly have both AF and EK as partners are Korean Skypass and Malaysian Enrich, although I know little about the programs. If you chose to put future EK miles in either of these programs they would not earn you any status though.

I have long considered joining Alaska as I mainly fly on AF, KL, BA and EK. But outside North America, being an Alaska elite does not seem to get you much lounge access or anything. You could pool a lot of miles in Alaska's programs, but from my understanding most or all redemptions have to start or finish in USA. I do not anticipate visiting USA in near future so I stick with Skywards even though it is a pretty poor program.

Alaska's or Korean's or Malaysia's programs might make more sense for you though.