trim - Colonial style casing / backband and alternatives

Here's my issue, I have windows and door casing that appears to be 1x6 that was custom routed, my down stairs is almost identical but has a backband. My current baseboard trim I've come to find has

Window Trim - This Old House

Ekena Millwork 2-1/4 in. x 3/4 in. x 96 in. Colonial Casing

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4-1/8 Step Bevel with Backband Casing CC150 - 14FT PC

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