If anyone has ever gotten the chance to touch a male lion, does his mane feel more or less just like human hair?
According to Jacob Markow, a supposed "zookeeper who specializes in the care of tigers and other big cats", and an "animal handler and trainer", who answered the Quora question: What does it feel like to touch a male lion?
The male's mane is, as you might expect, a bit tangled in general. These guys rarely get a spa day and thus their mane is not usually combed out. The mane and end of the tail is more hairlike than their coat is in texture and length. Both are generally rough and the end of the tail (in fact, the whole tail) is heavy and stiff.
Also, like Elmy pointed out,
Cat skin in general produces much less skin oil than human skin, making it drier and less smooth.
Another internet question, similar to this one and the Quora one linked earlier, a source from YahooAnswers! who "works at a zoo" says this:
The fur tends to be rather soft but every lion mane I have ever touched tends to be slightly coarse. It is still soft but it does have a thicker and rougher feel to it. There are some sections though that have that baby-fine really soft hair too, but the bulk is thicker.
From the question What does a lion's mane feel like? (link is now broken).
Lastly, Wikipedia states:
The presence, absence, color, and size of the mane are associated with genetic precondition, sexual maturity, climate, and testosterone production.
This again implies it can vary by climate and the actual lion.
Wikipedia also says this:
the rule of thumb is that a darker, fuller mane indicates a healthier animal. In Serengeti National Park, female lions favor males with dense, dark manes as mates.
So it may be possible that through natural selection, lions get thicker and darker manes because of this.
In conclusion, most of Lion's Manes will be:
Disclaimer: I am not an expert on big cats and I am not a biologist or zoologist. My answer is based on other sources.