Right now 99% of my holdings are in BTC, the other 1% ETH.

I´m looking to diversify my portfolio a little, the thing is I´m not a trader, I would like to invest in other crypto with the same mentality I follow when I buy bitcoin, which is basically buy, hodl and forget about them. Are there any altcoins that match this criteria ? Or this mentality applies mostly to bitcoin ? I don´t intent to keep checking prices every day.

I was thinking maybe 70% BTC, and 30% equally divided between LTC, ETH,RIPPLE and others.