The ranks of the English peerage are, in descending order, duke, marquess, earl, viscount, and baron.
Such peerages follow the old English inheritance law of moieties so all daughters (or granddaughters through the same root) stand as co-heirs, so some such titles are in such a state of abeyance between these.
Baronets, while holders of hereditary titles, as such are not peers and not entitled to stand for election in the House of Lords.
Knights, dames and holders of other non-hereditary orders, decorations, and medals are also not peers.
Peers known by a higher title in one of the other peerages are shown in blue, and peers with more than one title of the same rank in the Peerage of England are shown in orange.