Sometimes Ram and CPU are enough but we need more storage. Please make a special category which is storage rich as i am taking about storage so Nvme would be good option instead of ssd. So Nvme plans from 100 Gb to 1 TB.
Because we have rich data application which receives data and store in the database.
For me i had a Cpu-Optimised 80$ plan so for me 4 Cpus and and 8GB ram was enough what i needed was storage that was not enough (it was 50 GB).
Yes i know about Block storage but it is connected through network so it has performance penalty. I ran a test for inserting 1000 records in the DB:
When i used droplet own SSD: 1000 inserts took 3 seconds from php script.
When i used droplet Block storage :1000 inserts took 20-25 seconds from php script.
So i could not use Block storage.
Due to that issue, i have to move to another hosting company because digital ocean doesn't provide enough storage for its droplets.