There are two types of unit trust,
A) one you buy as investment,
B) Another is you buy as Insurance but with extra invested in Units.
Top 3 In term of number of funds are
1. Public Mutual Bhd
2. RHB Asset Management Sdn Bhd
3. AmFunds Management Berhad
If you open an account with iFast Capital, the online investment platform, you may invest into over 300 funds from 26 fund houses. (However, currently, Public Mutual refuses to open their funds for iFast users).