Are some ritual spell cards and the Djinns of Rituals considered Ritua cards since they include Ritua in the card name like the xx-sabers are considered x-sabers?

Answer 1

You're confusing a type of card with an archtype. Archtypes like x-sabers and xx-sabers are just cards which share part of their name and are often used together. Ritual cards are monsters with a blue card back which are summoned using ritual spells- they're a whole different type of card in the own right.

In summary, no the djinn archtype and ritual spells are not considered ritual monsters.