The major sites (Valueresearchonline, Morningstar, Moneycontrol) first categorise different funds in different categories, according to their own whims and fancies (if you will check, they will tell you they have definite criteria but all those criteria are based on relatively short-term periods of recent past, eg. 1 year or 3 year). Few years back, VRO had a group of Diversified Equity, which later got divided into Large, Large-midcap, Multicap, Mid-Small cap. In future, it can happen with the higher number of funds, that there will be a Large-Medium-Mid and a Medium-Mid group too (who knows!).