There are many types and kinds and too many too discuss so you can look here for more details: http://tusciaintavola.tusciamedia.com/enciclopedia-gastronomica/70-c/438-carciofo.html

The species that tweaks my attention is the Napoli Cappello di Violetti. These are grown with small ceramic hats that guard the tops during growing.

Azienda A.m.p.o Sant’ Antonio Abate (NA) via de Luca, 23
T+ 39 081 3903300/347 1135440

Solerno Carciofi Bianco Comune di Pertosa Via Santa Maria 1
T+ 39 0975 397028
Vittorio Lupi