Uses a fallback value, then an array of strings that serve as an ordered list of preferred props from most to least to return from an object. The first valid prop gets returned.

propsOr.js

const validVal = compose(
  not,
  anyPass([isEmpty, isNil])
);

const validProp = curry((propName, obj) => validVal(prop(propName, obj)));

const propsOr = curry((fallback, propsList, obj) => compose(
  cond,
  append([T, always(fallback)]),
  map((str) => [validProp(str), prop(str)]),
)(propsList)(obj));


const data = {
  mostPreferred: 'X',
  preferred2: 'Y',
};

propsOr(':(', ['mostPreferred', 'preferred2', 'leastPreferred'], data);