Валерий

const arr = Object
  .entries(obj)
  .reduce((acc, [ k, values ]) => (
    values.forEach((v, i) => (acc[i] ??= {})[k] = v),
    acc
  ), []);

const keys = Object.keys(obj);
const arr = obj[keys[0]]?.map((_, i) => {
  return Object.fromEntries(keys.map(k => [ k, obj[k][i] ]));
}) ?? [];