Hello, according to the website: blockchaincenter.net, these cryptocurrencies are most searched among cryptocurrencies:
1. Bitcoin (80,8%)
2. Ethereum (14%)
3. XRP (8%) followed by Litecoin (4,7%), Bitcoin Cash (2,7%), IOTA (2,5%), Monero (2,1%), Tron (1,8%), Dogecoin (1,8%) and Cardano (1,5%).
They processed information based on Google Trends.
When you compare it with the market cap, then where is Bitcoin Satoshi Vision, EOS or Binance Coin?

BSV, EOS and Binance coins gained popularity very lately, but majority of the people started loving ETH, LTC and Doges earlier.
As XRP's introduction also made a noticeable change in the market, so many cryptocurrencie traders started using it in the earlier stage.
And about Bitcoin? We all love it because of it's high price.
So we shouldn't question about the top 3 searched cryptocurrencies.