帮忙点出if和whether whatever和nomatter what的用法上最大区别

I don't know whether Jack will join in the party or not
有了or not在用whether不会错
Whatever you do is none of my business
No matter what you say,I won't stop doing that.
whatever可以引导主语从句
No matter what不能引导主语从句,引导壮语从句