I looked back on pics to check and apparently I do exactly the same thing.Stacks of 10, 20 when possible. Biggest denom visible. After that, it's pure chaos...
Low denoms left and right of larger denoms.
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Chips starting with the number 5 outside chips starting with a 1
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Large denoms surrounding smaller denoms
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Big denoms left of smaller chips
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Big denoms right of smaller chips
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You have a better chance of finding a pattern in a Jackson Pollok painting.
Proper stack height and big chips out front are the only things that matter to me.