What are all the eragon dragons?

The ones that are openly named in the series include:

Saphira 2 - Eragon's Dragon

Thorn - Murtagh's Dragon

Glaedr - Oromis' Dragon

Shruikan - Galbatorix's second Dragon

Firnen - Arya's Dragon

Shaphira 1 - Brom's Dragon

Bid'Daum - The First Eragon's Dragon

Belgabad - the largest Dragaon during the fall of the Riders

Umaroth - Vrael's dragon

Valdr - an Elder Dragon found in the Vault of Souls (an Eldunari)

Vanilor - the king of the Dragons

And then you have the 13 Dragons of the Forsworn whose names were banished so no one remembers them.