char cloth will catch a weak spark from say a traditional flint and steel or a flint spark off the back of a carbon knife - none of the others will


esbit/tinderquick and cottonballs (with petroleum jelly) will so similar things but have different burn times allowing the use to select based on conditions (wet and rainy and need fire fast then use the firestarter w/ longest burn time)

rubber I assume is for generating black smoke for signalling

tinder quick will have a short burn time, esbit will burn over 10 minutes very intensely and can start fire under worst conditions w/ minimal preparation

other tinders: jute twine and un-used tampon (the cotton torpedo inside)