In which species are all the carbon atoms considered to be `sp^(2)` hybridized?

Statement-1: All the hydrogen atoms in CH_(2)=C=CH_(2) lie in one plane. Statement-2: All the carbon atoms in it are not sp^(2) hybridized .

Statement-1: All the hydrogen atoms in CH_(2)=C=CH_(2) lie in one plane. Statement-2: All the carbon atoms in it are not sp^(2) hybridized .

All carbon atoms are sp^(2) hybridised in

All carbon atoms are sp^(2) hybridised in

In which species can we describe the central atom as having sp^(2) hybridization?