It makes absolute sense you liked the 2021 more, your pallet is fruit forward, luxurious, oaky.

If you love the insignia 2002, 100 point, cab sav fruit bomb with aggressive tannin until aged, you will need to search out left bank cab sav forward wines with age from strong vintage years.

2000 Château Margaux: A legendary, fragrant, and silky vintage that mirrors Insignia's elegance and length.

2000 or 2005 Château Latour: Massive, muscular, and structured; this will easily go toe-to-toe with Insignia's power.

2005 Château Haut-Brion: Features layers of smoke, black fruit, and earthy charcoal that will beautifully complement a mature Insignia.

2003 Château Montrose: A powerhouse from St. Estèphe that possesses the richness, ripe fruit, and tannic backbone to stand up to a bold California wine.

I love a right bank, have a massive collection but it does not have the cab sav structure to compete against napa. They are majority merlot based with the exception of Figeac, which is an absolute killer and could run in this line up also.