Personally, money funds and index funds are more suitable for long-term holding. First, the income is stable. Second, the overall stock market fluctuates greatly. Personally, I think it can be classified as lazy fund.
Equity funds fluctuate greatly, and they will have relatively rich returns in good years, but they will really want to cry when they encounter a plunge after 15.
Hybrid type and bond type are relatively between currency type and stock type.