The euonymus is the most likely to set roots in water. Often roots will form along a stem while it is still on the plant in the case of euonymus. If you are going to take cuttings make sure you take new, green wood that forms this spring.

The variegated dogwood might be trickier but worth a try. With this one, again use new green wood tip cuttings and because the roots may take longer to form put cuttings in moist vermiculite, cover with a clear plastic baggy with two small ventilation holes cut in it. For comparison, you could try some in a glass of water.

My red-twigged verigated dogwood roots quite spontaneously where the branches touch the ground. A bit of a nuisance in fact.

I'd like to transplant my variegated dogwood shrub. Is now a good time, or should I wait till spring?