Having an incredible vision of a world where "igniting a lightsaber" is a bit more literal of a phrase, and lightsabers are like blowtorches, where you turn on the gas and then light it with another flame.
Please just imagine count Dooku with a fancy metal cigarette lighter for this purpose,
Anakin always loses his lighter and has to ask R2-D2 to light his saber with the flamethrower he installed,
Obi-Wan always just pulls a single match out of his pocket and holds it up like it's the last one he has but it never actually is
Qui-Gon and Yoda have both lit their sabers with a blunt at some point (idk if actually possible i am not a cool kid but shhh they are space wizards)
Initiates all have to line up to have an instructor light their training sabers
Going to Ilum to get your kyber crystal is accompanied by (another) lesson on fire safety
Wookies and other furry species have some kind of safety lighter probably
Aquatic species use some other form of weapon i guess? or have like sci-fi greek fire idk
Some Jedi believe that if there is no naturally available source of flame than it's not the will of the Force to light their sabers at all
A common gift from masters to padawans is their first lighter or maybe there would be a pair of beads designed to create sparks (kept on padawan braid/strings as a back up)
Mace always uses the spark beads (shatterpoint imagery you get me)
Depa does the same as Mace, for the aesthetic (she didn't get a purple lightsaber but she can have this ok), and teaches Caleb the same (he keeps his beads into the empire, even though he has to hide them)
Pre-war Jedi don't even light their sabers that often, and this is why those rumors about Jedi all using death-sticks started, since very few outsiders know why they actually carry lighters
Sidious lights his with lightning (which sounds cool but actually it backfires and blows up in his face at least 50 percent of the time)
Maul just has an actual blowtorch he uses to light his saber, which
If the Jedi try and deny the death stick rumors than new rumors start that they're all pyromaniacs, so they don't really bother.