Tether? Are you sure? That is a coin that stays at 1 dollar no matter what. XRP as well, that is a centralized one that never broke over the previous 2018 ATH as well, it never really took off during the last bull run during 2021 and always sucked. When you have a company running a coin like it is their own money then you get yourself something that doesn't work out too badly. In the end we are talking about something that is definitely not profitable and very centralized and has a track record of being bad investment.

I would definitely not suggest it for anyone in the world. Others are fine, BNB definitely has a good future and could go up as long BSC keeps being profitable for many people, ADA needs to build the smart contract part of their ecosystem, which could lead to them being awesome in the future, SOL already doing awesome with low fee (nearly zero) and NFT world, so those three are definitely great.