Sorry, no vote from me, as:
- the question isn't clear (if you are truly asking which will explode soonest, it won't be a type of star, so much as a list of several actual stars - see below...)
- the criteria for nova/supernova behaviour is not really dependent on spectral type, so much as.. mass.
- the 'types' you have listed is a motley mixture, adding in some newer, rarely used classifications yet excluding others, and seems to include classes that are not even stars..
Further, I can't fathom why a poll is applicable. Are you testing people's knowledge of star types? If so, you will find that the vast majority of folks (myself included) don't keep them memorised, nor think on a daily basis about how the type will affect their future behavior.
As for the best candidates to watch, well.. keep your binoculars trained carefully on Eta Carinae, Betelgeuse, Antares (not many people know that!) and Alpha Lupi...
any day now, I reckon..
An interesting poll would be which star people think will be the
next spectacular one. May I be first to claim Antares - and it
will be spectacular! Just hope I'm alive..