How can Christ be the firstfruits of the resurrection when others were raised before him?

In 1 Corinthians 15:20-23, we read of Christ as firstfruits but in Matthew 27:52-53, we read that at the death of Jesus Christ, many saints arose. How do I then draw the line in explaining Christ as the firstfruits since a group arose before him?

[Matt 27:52-53 WEB] The tombs were opened, and many bodies of the saints who had fallen asleep were raised; and coming out of the tombs after his resurrection, they entered into the holy city and appeared to many.