In the Jon Renau line, there are two shades that would are comparable to Raquel Welch's Glazed Mocha: Almondine (10RH16) and Walnut Syrup (FS10/16).
Almondine and Walnut Syrup are going to be relatively the same shade since they both have a #10 (ash/ golden brown) and a #16 (ash blonde) shade. The biggest difference is that Almondine has more prominent ash blonde highlighting, but the base color on both shades is going to be the same.
Walnut Syrup is considered more of a cool color since it is considered an ashier tone, whereas, Almondine has just a hint more of a golden tone to it. They are very similar, but if you want that slightly warmer tone, then Almondine is going to be your best bet.
Here are the links to Heather's color spotlight videos for both shades:
I hope this information has been helpful for you!