JQuery. Method to find closest common parent node of two jquery objects

Question

Is there any solution to find closest common parent node of 2..N jquery obects?

window.__node_1 = $('some-selector');
window.__node_2 = $('some-other-selector');
//..
window.__node_[N] = $('some-other-N-selector');

1. How to find it using window.__node_1 and window.__node_2
2. How to find it using [window.__node_1 .. window.__node_N]