Mythology book with mini stories of mythologies from everywhere

Hi — I’m trying to find a childhood book I read when I was ~12–15 (I’m 27 now). I bought it second-hand in India around 2010–2014. Details I remember:

Slim anthology — about 30–70 pages (probably ~50 pages).

Covered multiple myth traditions: Greek, Roman, Norse, Indian, and even a section that touched on the Ottoman world. (Not necessarily in that sequence.)

One memorable tale: the birth of Athena (Zeus giving birth to her). They also use names like Jupiter (Roman) and mentioned Norse characters that felt like “Santa”-type figures (i.e., mythic seasonal figures).

Cover: deep jewel-toned / dark purple hue. The artwork is dramatic and painterly — a Michelangelo-church-ceiling type style. I specifically remember Zeus (or Jupiter) raising lightning on the cover; there might have been other gods pictured around him.

Publisher also produced a companion book about mountains with a snowy mountain on the cover (same series/look).

The illustrations inside were stylised, fine-art, not cartoonish.

I think the title I half-remember sounded like “The Book of Mythology” or something similar, but that might be fuzzy memory. Any leads would be amazing — even if you know of a publisher that did both a slim world-myths book and a mountains book around that period (2010–2015) in India, that could help.