Microbial Classification with 16S Nanopore Data
Use kraken2 with one of the 16S databases. Kraken2 has worked well for me with nanopore sequences. Pavian can be used to inspect the Kraken2 report files visually.

Using uncorrected called reads has worked for me. Any errors from nanopore sequencing should be inconsistent enough (i.e. not always lead towards the same wrong organism) that the noise doesn't matter.

Note: if you're using the MiniKraken database instead of a comprehensive 16S database, there might be some false positive species assignments depending on which kmers get pruned out.

Another possibility is centrifuge, but I'm not sure if that works for 16S amplicon sequencing; it's primarily for metagenomic analysis.