I have noticed from the Jedi Survivor live reaction video I did with the Star Wars community, that the lightsabers seem to have changed a bit in this new game following Jedi Fallen Order. The lightsabers seem to be longer in some scenes and unless this is a glitch or something (which I don't believe it to be so) I think Lucasfilm is following the old Jedi Knight 2 Jedi Outcast style where you can change your lightsaber type/strength/length. Much like in Star Wars history, we actually get lightsabers with a knob which can change the blade length and power. I believe Qui-Gon Jinn used this very feature on his lightsaber in the phantom menace when he tried to get into Nut Gunray's quarters.
here's some lore on the matter.
Learn more about your ad choices. Visit megaphone.fm/adchoices