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"World religions" is a fraught category. Tomoko Masuzawa's The Invention of World Religions: or, How European universalism was preserved in the language of pluralism (2005) - mentioned in the Times review! - pretty much represents the view of my generation of American religious studiesists. As if "religion" hadn't problems enough already!
But the world religions are alive and well, and perhaps serving their own important function as a staple of American college education (since religion can't be taught in public schools), and bumper stickers. Houston Smith's The Religions of Man (now The World's Religions) ruled the roost for almost half a century with accounts of:
Hinduism
Buddhism
Confucianism
Taoism
Islam
Judaism
Christianity
The Primal Religions
Hinduism
Buddhism
Confucianism
Taoism
Judaism
Christianity
Islam
I've long enjoyed showing students John Bowker's World Religions: The Great Faiths Explored & Explained (2006), which is more generous still:
Ancient Religions
Hinduism
Jainism
Buddhism
Sikhism
Chinese and Japanese Religions
Japanese Religions [=Shinto]
Judaism
Christianity
Islam
Native Religions
This is a hodgepodge but a good one, if you ask me, showing already in the heterogeneity of its categories (historical, national, native, -isms, and the lone -ity) that "religion" isn't one thing. Does it matter? Of course! I wonder what my Chinese religious studies colleagues think about it. I'll have to ask them!