That is indeed a Mojave Harlequin.
The Harlequin Gene is a dominant gene proven out by Amir Soleymani. The caramel golden color dorsal stripe (widestripe) is a major characteristic. If not a solid stripe, the broken stripe has eyes often called worms. Side pattern usually has wide keyholes as opposed to the alien eyes.
I am currently working with a Harlequin female (poss yb) who is gravid with my pastel male. If everything goes as planned, she should be due on 7/21/19.
Not many people are still working with this gene but I know Kevin McCurly of NERD has done some work with it.