There is only one unforgivable sin, that is blasphemy against Holy Ghost. Not sure about your question in that regard, because many do not even know what that is... In book of Hebrews.
My point exactly All sin leads to total and eternal separation from God. There is not one sin less than another. Blasphemy against the Holy Spirit is refusal to believe in the One He leads us to and testifies to, leaving no option for forgiveness of sin. There is no forgiveness outside Christ.