second cousin-nibling

Second cousin's child.

My second cousin-nibling is a good person.

second great-cousin-uncle

Grandparent's male second cousin.

My second great-cousin-uncle is a good person.

co-second-cousin-twice-removed-in-law

Spouse's second-cousin-twice-removed's spouse.

My co-second-cousin-twice-removed-in-law is a good person.

second-cousin-10X-removed

Second-cousin-ten-times-removed (2C10R).

My second-cousin-10X-removed is a good person.

sesqui-second-cousin

Sesqui-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and three great-grandparents in common.

My sesqui-second-cousin is a good person.

sesqui-second cousin

Child of their parent's sesqui-first cousins or are the child of their parent’s half-first cousin with their other parent’s first cousin.

My sesqui-second cousin is a good person.

half-second-cousin

1- Half-grandpibling's grandchild.
2- Someone who, in relation to others, has zero parents, zero grandparents and one great-grandparent in common.

Half-second-cousin.