A before people say one piece isn't a battle shonen yes it is

I’m just saying, it’s never been disproved by Oda.

1 - Sakazuki
Sakazuki, despite his main devil fruit ability, is the coldest of the bunch. He'll let you cling to his side with your head and hand on his chest, but even this is

pushing it...
It's best to avoid talking and let him smoke in peace, but that doesn't mean you shouldn't draw cute shapes all over his skin, maybe trace the lines of his tattoos and scars...

2- Borsalino
He doesn't care about what he likes or needs, he's not even sure he knows what his preferences are when it comes to cuddling, taking the lead will be the only route in this scenario.

Ask him if he prefers cuddling one way or another, try laying his head on your chest and see where the night takes you, you'll be his shining light in discovering the small pleasures in cuddling.

3-Aramaki
The only way this guy is letting you cuddle with him is if you sleep with him first. He's not into "mushy" or "lovey-dovey" things, but he'll do it in exchange tor sex.

His ego is probably the second thing you should stroke in this situation, but it's important you make him feel like the best man to have ever done it, the more inflated the ego the more he'll play along with you and make things more exciting.

4- Kuzan
Good luck trying to escape the cuddles from this guy. Being the laziest of the admirals, cuddling is the second profession he excels at.

This one is quite freestyle, you can be quiet or you can yap away, you can cuddle tight or loose, you can be affectionate or.... cold ;P

5- Issho
He worries the most for your comfort, and will ask so many questions to make sure you're enjoying this as much as he is. Is your arm asleep? Is it too warm for you? Are these enough pillows?

The key here is affirm affirm and affirm some more, give him kisses and pokes, tell him you're the most comfortable you've ever been, and that he's the sweetest man ever. (Watch his face go pink!)