Are there any more powerful symbiotes? If so then who are they and what powers do they possess?

Answer 1

Venom the black symbiote, it is worn by Eddie Brock then later worn by scorpion.
venom is an awesome symbiote.
The venom powers are its super human strength can lift 30-60 tons,swift & agile,can withstand against damage,can mimic anyones identities,mimic clothing,camouflage,shoots tenticles and swings around the skyscrapers,fast healing than normal humans
and other powers obtained from spiderman are...
climb walls,shoot webs,spiderman's scene jammer,
Venom weakness is from carnage.

Carnage the red symbiote, worn by cletus kasady.
Carnage can beat venom.
Carnage has same powers as venom but including the body forms spikes and blades used as weapons.

Toxin symbiote,worn by Patrick Mulligan, the most powerful symbiote of all symbiotes combining venom and carnage powers.
Toxin can also beat both venom and carnage.

Scream the yellow symbiote, worn by Donna, the first female to wear symbiote.

Hybrid symbiote,unknown host,have all same powers but including flight.

There are so many other symbiotes....
You can find out from this website.

Answer 2

The Carnage symboite is pretty powerful.. It last posseses Kletus Cassidy .. a brutal serial killer. The symboite was very much like Venom, but it could form weapons like an axe or knive from it.
There was also a female symboite who aside from ehnaces strength and agilty could turn invisible
There were a bunch morein the Planet of the sybites arc, as well as a venom "the madness" mini series

Answer 3

i can't top rohit e's answer.