Four of the following five are alike in a certain way and thus form a group. Which is the one that ‘’does not’’ belong to that group?

The data given to us is:
A, B, C, D, E, F, G and H are sitting around a circular table facing the centre but not necessarily in the same order.
● C is an immediate neighbour of both G and A. E sits second to the left of C.
● Two people sit between E and H.
● B is an immediate neighbour of G. Only one person sits between B and F.

The data can be intrepreted in diagaramatic form as:

Except FE, all others pairs have two members sitting between them.
FE has only one member.