My recent altcoin investments are:

1. Litecoin
2. Elrond
3. Algorand
4. Near Protocol
5. Bitcoin Cash

Reasons why:

Litecoin because of the new MimbleWimble feature which makes Litecoin practically an anon coin. I want to make sure I always have at least one anon coin in my portfolio and this is a great x3, maybe x4 mid-term play.

Elrond because of low supply, great dev team, and I think that I can go x5 to x7 ish within a year or two with it.

Algorand because of its unique POS system that I sort of bet on can compete with ETH 2.0. I hope to go 3x with this within a year.

Near Protocol because I like its workings and I expect it to go 10x within 18 months tops.

Bitcoin Cash because it is so cheap now I couldn't keep myself in and bought it, only to be probably selling it from $250-$300ish onwards, going my money times 2,5 - x3 ish.