Saint Thomas Aquinas settled on but one Jewish-Catholic faith. If I remember correctly, it is Réginald Marie Garrigou-Lagrange OP in his volume on Faith who made comments on this, as well as Giuseppe Cardinal Siri in his Gethsemane. I’m with Saint Paul, who says:
- “ I speak the truth in Christ, I lie not, my conscience bearing me witness in the Holy Ghost:  That I have great sadness, and continual sorrow in my heart.  For I wished myself to be an anathema from Christ, for my brethren, who are my kinsmen according to the flesh,  Who are Israelites, to whom belongeth the adoption as of children, and the glory, and the testament, and the giving of the law, and the service of God, and the promises:  Whose are the fathers, and of whom is Christ, according to the flesh, who is over all things, God blessed for ever. Amen.” (Romans 9:1-5)
The Jews are the lampstand for the Light who is the Messiah, Jewish through and through. Jesus is the Lumen gentium, the Light of the Nations. They are the family which shines the Light. The nations, with that Light shining upon them, are adopted. But all become one in Christ Jesus.