Will Riga, which is opm bishopric be king ranked?

[Wizzington]

Archbishops are King rank but become Duke rank if they secularize and don't have a large realm.

The Archbishop of Riga having a higher rank than Grandmaster of LO is entirely historical.

 

[Wizzington]

So is Navarra being a kingdom, which was also mentioned here. Yet Navaraa is a duchy in game.

Navarra starts King rank. It was likely vassalized and thus reduced in rank.