Finding the best variable characteristics

Looking over the list of ACS 35k+ variables available, it's hard to narrow down on exactly what I'm looking for. Is there a tool or set of best practices available? For example, if I wanted to find household income tier count by householder age and presence of children, how would one go about that?

I've not found a better way than other than to find a survey section and just scroll.

TIA!

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