Honey is great if it's raw and not cooked, Maple is natural.
Agave is heavily processed, it's been long since people stopped using it. It is sold to everyone as natural, but the Agave cactus does not give you this final sweetener. It undergoes processing to achieve the sweetener. It's as bad as high fructose corn syrup.
Silan is far from Date honey. Read any Silan container off the supermarket shelf, it is usually 50% dates, but 50% sugar mixed with it.

Again, honey and maple are great and natural.