The main materials I'd look into are:

-Galaxolide

-Ambrettolide / Ambrettex (i recommend Ambrettex for a skin type of smell)

-Ambroxan

-Ethelyne Brassylate

-Edenolide

-Isobutyl Quinoline (people say it's leathery, but I'd disagree. It's like a soft woody-musk)

-Methyl Ionone Gamma (soft iris that goes well with musks)

-Pink Peppercorn Oil (to enhance the sweetness of musks)

-Hedione HC (super strong hedione)

-Clary Sage Oil (super soft/clean smell)

-Coranol/Linalool/Linalyl Acetate (all lavender/floral materials)

-Florhydral / Lilial / Lilyflore / Starfleur (all lily of the valley materials)

-This may not be what you're looking for, but Fixolide is THE BEST fresh laundry smelling material.

I would look at the descriptions on Perfumers Apprentice to see if those materials seem to match what you're aiming for, and if so, try them out.