It is kind of like H sound in Jose in Spanish, but also like CH sound in Loch Ness. But it is the H and CH together. I think it is close to X sound in Greek. It is not the same as the X sound in English.
but you don't have American sound, so I can't write it phonetically
How come the H spelling has two Ks and the CH spelling has one K? Hanukkah Chanukah
It is the same reason. More Ns or more Ks are because American alphabet doesn't have the same letters as Hebrew alphabet. People try to spell it may ways, this list is in order of how often they are used, the most often is at the top.