Out pipe solution for sink, dish washer and washing machine

If I'm attaching a dishwasher and washing machine to my kitchen sinks out-pipe (The pipe goes straight down under the concrete floor after the kitchen sink), am I better with double input hose connectors

Or

A standing water pipe?

or does it not matter and should I just use whatever best suits the space

Thanks

Advice from 1 local tradesperson

You can use appliances trap to connect dishwasher without any problem after it.

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