But see the thing is half the party is already using homebrew classes and he asked me to make a race and 2 classes for himJust refluff the healing spells as involving herbs, Conjure Animals RAW already summons spirits, not real animals, and it's up to the DM what philosophies druids believe in in their setting.
As for skinwalkers, from what I know of the myths, these are monsters, not player characters.
I'm always wary if a player wants a non-rules class. It seems to smack at either special-snowflakeism, experience that 3rd part classes tend to be overpowered, or a failure of imagination. Usually, I just say "no, but you can refluff an existing class".