Easter Sunday has its own particular rubrics.
This is from the Roman Missal for Easter, “At the Mass During the Day”, which is the only other Mass besides the Easter Vigil. (unlike Christmas, there is no “Mass at Dawn” etc.)
The Creed is said.
However, in Easter Sunday Masses which are celebrated with a congregation, the rite of the renewal of baptismal promises may take place after the Homily, according to the text used at the Easter Vigil. In that case, the Creed is omitted.
Note that it “may” replace the Creed—not that it must. It’s still optional.*
On any Sunday, the penitential rite may take the form of the sprinkling, this is especially suggested for the Easter season----but there is no requirement to do so. The Rite itself is in Appendix II of the Roman Missal. The Missal itself does not directly address the question of the sprinkling rite taking the place of the usual penitential rite on Easter Sunday itself. It neither allows nor prohibits it. It merely has 2 options, one for the Easter season, and one for outside the Easter season.
However from the point-of-view of sound liturgy, since the suggestion that this be done after the homily is specifically made, it makes for better liturgy to follow that suggestion rather than the more generic one which applies to any Sunday. Because this form is closely united to the Easter Vigil (especially since it has the renewal of baptismal promises which is not an option for other Sundays), there is a value in doing it after the homily. Either way though, would be a licit option.
- It’s worth noting that in the old Sacramentary, the rite was done after the homily, and this was not presented as an option.