I would be really interested to learn what the default advice for retail investors is across countries. In Germany the consensus is MSCI World or FTSE All-World ETFs. I believe in the US most advice goes to VTSAX (US Total Market), VOO (S&P500) and maybe QQQ (NASDAQ100) which means only US stocks. What gets recommended in other countries?
Generally the default fund in a decent 401(k) (employer managed but largely employee funded retirement plan) will be a "target date retirement fund" that contains a mix of equities and bonds according to the expected risk tolerance of someone at that age, and generally the equity component is also split between US and foreign equities. e.g. Fidelity's fund for people planning to retire around 2050 https://fundresearc…
My IRA/401(k) actually has close to 100% cash/bonds to minimize annual taxable impact and the rest of my portfolio is equities.