Hi!
1)How to play these different time controls?
2)Do you need different kind of skills to be good at on different time controls?
I think on 3 0 and 10 0 you can use more speculative attacks and pressure on time. Also it's better to go into type of positions you understand and you are familiar with.
There are some differences on 10 0 and 15 5. Lot of people start a game of 10 0 like a 5 0 blitz game: they save a lot of time. Mostly that is advisable. Also good blitzers often seem to play rather 10 0 than 15 5 because they can use same skills they have on blitz and get lot of wins. I think you need slightly cleaner approach for 15 5 than 10 0. You can't play that often overoptimistic attacks engine doesn't like. Also the advantage on time often doesn't help you if you have bad position on the game of 15 5. Most often it doesn't pay off if you have bad position with 12 mins and your opponent has 4 mins, because on many games increment helps your opponent.
On Fide rated rapid games I am not that good, but here Lichess I got rapid 2600. Blitz record is only around 2500.
1)How to play these different time controls?
2)Do you need different kind of skills to be good at on different time controls?
I think on 3 0 and 10 0 you can use more speculative attacks and pressure on time. Also it's better to go into type of positions you understand and you are familiar with.
There are some differences on 10 0 and 15 5. Lot of people start a game of 10 0 like a 5 0 blitz game: they save a lot of time. Mostly that is advisable. Also good blitzers often seem to play rather 10 0 than 15 5 because they can use same skills they have on blitz and get lot of wins. I think you need slightly cleaner approach for 15 5 than 10 0. You can't play that often overoptimistic attacks engine doesn't like. Also the advantage on time often doesn't help you if you have bad position on the game of 15 5. Most often it doesn't pay off if you have bad position with 12 mins and your opponent has 4 mins, because on many games increment helps your opponent.
On Fide rated rapid games I am not that good, but here Lichess I got rapid 2600. Blitz record is only around 2500.