What are the different kinds of Doctypes available?

Answer 1

Please search before posting new questions ...

https://www.sololearn.com/Discuss/2328167/?ref=app
https://www.sololearn.com/Discuss/2519901/?ref=app
https://www.sololearn.com/Discuss/2667053/?ref=app

External links:
http://www.html-5.com/changes/no-html5-dtd.html
https://www.w3schools.com/tags/tag_doctype.asp

Answer 2

DOCTYPES can be used: strict,transitional and frameset.

there is only one type of Doctype available.