thin red cloth, high officer
縉 centers on a thin red cloth, and by extension a high officer, likely because such cloth was used in official garments or insignia.
縉 combines 糸 (thread, cloth) with 晋, which likely contributes the sound and may relate to advancement or official rank, giving the meaning of a fine red cloth associated with high officers.
The left side 糸 is thread or cloth, and the right side 晋 looks like an official's seal or rank badge. Imagine a thin red cloth woven with the mark of a high officer.
For シン, picture a thin red cloth draped over a shiny official seal: shiny -> シン, and the cloth marks the high officer's rank.
person of rank; person of status; ranked official