Philosophies that are almost like religions?

[Cassius]

Marxism:

1. Many (not all obviously, but many) of its self-proclaimed adherents are actually very poorly informed as to what Marxism actually is/what Marx said and wrote, as is the case with many religions.
2. Splintered into dozens of sects on the basis of (often granular) literary and historical disagreements.
3. In relation to the above to parts, has a canon of sorts that Marxist intellectuals are always at pains to delineate and exegese upon.
4. Unlike plenty of other philosophies, Marxism has had and continues to have a very large number of self-proclaimed adherents, often organised in parties with a clear leadership (‘episcopacy’).
5. Most of the basic prepositions of Marxism are essentially unfalsifiable and basically faith based (as with religion).

Not a criticism of Marxism, but these points, and the fervour and emotional attachment that a lot of people have towards it, incline me to view it as a kind of modern religion.