Gosh! How many do you want? In no particular order:
Doctrine of the Mass
Mass has the same meaning then as now.
Penances
Penance is still the same practice in the Catholic Church.
Pilgrimages
Pilgrimages are still the same then as now.
Indulgences
Indulgences are still taught and granted in the Catholic Church.
Baptismal Regeneration
Baptism has always been believed as regeneration in the Catholic Church.
Auricular confession to a priest
Still the same practice today.
Equal Authority of Tradition to Scripture
The Spoken Word of God is still of the same force as the written word and explains the Written Word in Truth.
Seven sacraments
Nothing has changed.
Authority of the 'pope.'
Nothing changed, the Pope is still the visible Apostolic head of Christ’s Church.
Celibacy of priests
Still practiced so that the priest is singularly devoted to Gods work, and not divided in his responsibilities as Paul talked about.