what are the top three virus and Malware softwares for Mac?

Most long time posters recommend not using antivirus software or cleaning software such as CleanMyMac. They tend to interfere with normal computer operations.

For Malware, try Malwarebytes,

Download this program which was written by Thomas Reed, a long time poster. The program will do the work for you which makes it easy. There is no reason to leave it installed once troubleshooting is finished. The free version doesn't update itself. If you need it again, you can download it again.

Malwarebytes Anti-Malware for Mac 10.10 and later

Malwarebytes uninstall

There aren't any viruses. There are other forms of malware, very often adware.

Effective defenses against malware and other threats

There are no virus on a Mac. Hence there are no top three.