Hello and welcome Auxane,
although Hammond doesn’t use this term you could call the Hammond 44 a tenor melodica (and the only existing tenor melodica in the world!) because of its range down to c. At the same time it’s an alto melodica reaching g3. And, best of all, it’s a highly professional instrument! Unluckily it’s not the cheapest but the most expensive of all, but according to the reviews in this site it should be worth it.
Greetings, Quetscher