no less or not less, clearly os no doubt, than those with or than those who have
Hello
Your lessons are no less useful and interesting than those who have a million subscribers. Clearly the number of your subscribers will increase.
1 no less or not less,
2 clearly or no doubt,
3 than those with or than those who have

Thank you.

Question

no less or not less, clearly os no doubt, than those with or than those who have
Hello
Your lessons are no less useful and interesting than those who have a million subscribers. Clearly  the number of your subscribers will increase.
1 no less or not less, 
2 clearly or no doubt, 
3 than those with or than those who have

Thank you.

Answer

Hi Sergey in this context I would say "are as useful" rather than "are no less useful" it sounds more natural to me. But it is still correct! Just an alternative :)

Answer

1 no less 
2 clearly or no doubt [Both are fine.]
3 than those who have