Many Roman Catholics (and Christians East and West in general it seems) have a hard time distinguishing between theology and dogma. The two are not the same. Dogmas are the essential elements of the Faith that we must believe. If a group of people decide that they do not agree with a certain dogma, oftentimes they form their own splinter group. This is, after all, what happened with Protestantism, and is currently happening with the various schismatic groups such as the sede vacantists and the SSPX.
Theology, on the other hand, is different and very diverse within the Church. Academic theology is systematic on the Word of God and currently defined dogmas. This reflection oftentimes leads to the formation of a dogma when controversy arises - perhaps it’d be better to say “confirmation” of a dogma because the Church doesn’t form new dogmas, but rather confirms that which it has always believed.
Theology is also more than mere academic reflection. In fact, from an Eastern perspective academic reflection is one of the lowest forms of theology. Rather, theology is a living relationship with God mediated to us through the life of the Church, which is the Body of Christ. Theology is participation in the life of God - theosis/deification - and then our attempts to communicate that participation to others. It not only varies from East to West, but within the particular traditions of East and West it can take on many different expressions. For example, in the East many saints put a very strong emphasis on praying the Jesus prayer, others hardly mention it at all. Similarly in the West some saints insist on praying the rosary daily, others say nothing on the matter, and others still probably never even heard of the rosary (St. Francis of Assisi for example). That’s just a very minor example.
I believe it was St. Augustine who insisted on unity in essentials, diversity in non-essentials, and charity above all else.