Hello Jose,
I came up with these constructions based on sentences I have seen. Are they right? How are they used? Do they belong to a particular semantic class? What they do mean? What other grammatical constructions that are out there?
Whoever, no matter who, regardless of who + noun/pronoun + may be/is
Wherever, no matter where, regardless of where + noun/pronoun + may be/is
Whatever, no matter what, regardless of what + noun/pronoun + may be/is
However, no matter how, regardless of how + noun/pronoun + may be/is
Whichever, no matter which, regardless of which + noun/pronoun + may be/is
Whenever, no matter when, regardless of when + noun/pronoun + may be/is
Whoever, no matter who, regardless of who + adjective/adverb + noun/pronoun + may be/is
Wherever, no matter where, regardless of where + adjective/adverb + noun/pronoun + may be/is
Whatever, no matter what, regardless of what + adjective/adverb + noun/pronoun + may be/is
However, no matter how, regardless of how + adjective/adverb + noun/pronoun + may be/is
Whichever, no matter which, regardless of which + adjective/adverb + noun/pronoun + may be/is
Whenever, no matter when, regardless of when + adjective/adverb + noun/pronoun + may be/is
Feel free to add anything else that is missing or that needs to be discussed.