There are a heck of a lot of them - the AllianceofSmallIslandStates (Aosis) and the Least Developed Countries bloc (LDCs) have more than 70 members combined.
That is too late for the Least Developed Countries (LDCs) and the AllianceofSmallIslandStates (Aosis), who both say talks must begin in January and conclude at the end of next year.