Yes, to be more specific about your particular tankmates, severums and geophagus would not likely do well at the higher discus temps, they can get quite large, may tend to show aggression at times, and out-compete discus for food - not recommended as good discus tankmates.
Many discus-keepers have Angels with discus, but usually the discus are larger than the Angels -otherwise the Angels can be aggressive and also outcompete discus for food. Wild Angels (and even some domestics) may at times carry harmful pathogens that they are resistant to, but the discus are not.
Festivums remain smaller, are usually gentle & non-aggressive, and do better at the higher discus temps - this may be the only species you have that could be a compatible discus tankmate.
Again hope this helps.