I'm Orthodox. There really isn't anything like an official catechism in Orthodoxy. My point to you about the Creed is that the bishops who proclaimed the Creed at the Council of Nicea used the words quoted in a very specific way and the words are interdependent. The allusion to the year 98 refers to the first use of the word "catholic" (universal) to describe the Church, by St. Ignatius of Antioch, the bishop of Antioch, appointed by St. Peter and a disciple of both +Peter and +John, who defined the Church as catholic and to be found where the bishop is because that is where Christ is. Apostolicity refers to the bishops within the succession from the Apostles and which every Roman, Orthodox, Eastern Rite Catholic and Non Chalcedonian Christian bishop can lay claim to. When the Nicene Fathers used these words, this is what they meant and actually what that quoted part of the Creed means.
This is going to sound like nitpicking, but the facts are important. The last two paragraphs of the Nicene Creed (including "One holy, catholic and apostolic church) weren't added until the Council of Constantinople in 381. The concept of a single, unified apostolic church didn't really exist in the early part of the fourth century (during the Council of Nicea), as each of the churches founded by an Apostle was known as an "Apostolic Church". Being an "Apostolic Church" provided that church a measure of additional importance. It is important to note that almost all of the Apostolic churches were in the West. But, by the time of the Council of Constantinople (which was in the East), some of the original Apostolic churches had begun to reject the orthodox faith. The importance attached to being an Apostolic Church was in decline, (although the Church in Rome still tried to claim the title of being "First" among Apostolic churches). But with no Bishops from the West attending the Council of Constantinople, and no churches in the East holding the title of Apostolic church, the Eastern Bishops no doubt recognized a good opportunity to give the term "Apostolic" a more universal meaning. Thus, from many separate Apostolic churches came one, universal, apostolic church.
Finally, the statement you reference from St. Ignatius is not accurate as you describe it. His quote is, "Wheresoever the bishop appears, there let the people be, even as wheresoever Christ is, there is the Catholic Church." In other words, the church is where Christ is, which is a little different than saying Christ is where the Bishop is.