Is there a tool that automatically associates certain websites with specific isolated browser profiles?

I've been enjoying and appreciating Firefox containers to effectively silo browsing into isolated buckets but I find it doesn't go far enough to help me in my day to day usage. I've been trying, unsuccessfully, to e.g. only open Google/Alphabet owned websites in a specific container. Turns out I'm not able to stay focused enough to maintain this separation and most of my containers probably have enough data to reassemble a connected profile. What I'm looking for is a tool …

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