The tuberous drosera I have germinated and without any care (GA3, smoke, fire, ect) are Hookerii, auriculata, yilgarensis, pelata (about 6 localities) lunata, I think there is another?
However smoke treatment increased germination rates for all but Lunata and seems to make stronger seedlings, to smoke my plants I collect eucalyptus leaves and put them in a ceramic dish, I then light them up and let about half burn, I then throw the pot with the seeds and the ceramic dish in a 52L storage container, the smoke suffocates the fire within a minute so the container doesn't burn.
I then leave this for 4-5hours (also the soil is moist at this stage), I then move them to an area with morning sun (2-4hours) and bright light (rest of the day), and use a 5cm water tray on a 15cm tall pot, I also mist the seed immediately after removing from the smoke box as it is a chemical in the smoke they like.
once they germinate the water table is dropped to 2-3cm, once they are 1cm in diameter they are slowly moved to more sun.
I am in a tropical climate and must start this just before winter so the plants have all winter to grow, then they are moved to a cool, shady part of the polyhouse and left in a 1cm tray that dry's and is refilled.
Except for 2 peltata variants and the lunata which I grow year round, very happily, they both flower all year, make plenty of tubers and are not fazed by temps in the 40's (C, about 95-100F), lunata also does best in pots that are flooded by 1-2mm in winter and in 15cm tall pots with a 5cm tray in summer.
Fresh tuberous seed (less than 3months) germinates in 1-2months for me, but I have had old seed (over a year) and it didn't germinate until summer (over 6months) and then died from the heat.