What is the best sup ever?

I think the best sup ever is Lulu, because she can stop the attack of the enemies and your ult is so good.

Hands down Janna, she is so versatile, good base numbers, super speedy. She does rely on a competent AD though I guess

All supports are good in some way. Enchanter supports (Janna, Lulu, Soraka, Yuumi etc.) are good at keeping your teammates alive, while Engage supports (Nautilus, Alistar, Leona) usually start teamfights with their engagements. Then there are supports that have hooks (Also Nautilus, then Blitz, Thresh etc.), with them you can catch enemies when they are alone. Other supports like Senna provide healing, damage, crowd control. There can also be offmeta picks on support like Wukong (mainly paired with Senna) and Veigar (mainly paired with an APC).

I don't really think that League of Legends has the one and only "best" support, but it is really easy to climb the Ranked Solo/Duo ladder with enchanter supports.

Probably the best pick for climbing isYuumi. She is really easy to play and is really overpowered. Yuumi's best pairs are Ezreal and Vayne, so whenever your ADC picks either of those (both champions are really popular) you could pick Yuumi.

I read that you think that Lulu is the best support, now it also depends on pairing. Kog'Maw, Aphelios with her are really good.

Hands down Janna, she is so versatile, good base numbers, super speedy. She does rely on a competent AD though I guess

The best support would be leona good engage and tankyness and crowdcontrol

Leona, Thrash and Blitz.
Tanky, can engage fight, many CC and save your adc.

The best one is the one you like the most thats the only true answer

There is no better or worse! Everything is equalized, and when someone starts to stand out, RIOTs cut him down in something. The main thing is to use the combinations of characters ADD+SUP, well, and also so that the arms are straight.

Thresh-Peal,engage,disengae,shield,safe tool
Bard-Great roaming potential just need 2 learn this champs

I think it is Soraka, you can save a lot your team if her ulti, and your heal speed can turn a lot fast in late game, soo you can save a lot people with it.