Let's count these with complete genome
$ grep 'Complete Genome' assembly_summary.txt | cut -f 8 | cut -d " " -f 1,2 \
| csvtk freq -H -n -r | head -n 20 | csvtk pretty
Escherichia coli 306
Bordetella pertussis 291
Salmonella enterica 260
Staphylococcus aureus 145
Campylobacter jejuni 113
Klebsiella pneumoniae 108
Listeria monocytogenes 95
Helicobacter pylori 85
Pseudomonas aeruginosa 80
Neisseria meningitidis 76
Chlamydia trachomatis 68
Legionella pneumophila 62
Acinetobacter baumannii 59
Burkholderia pseudomallei 59
Corynebacterium pseudotuberculosis 59
Mycobacterium tuberculosis 52
Bacillus subtilis 50
Streptococcus pyogenes 50
Bacillus anthracis 43
Bacillus cereus 36
You should probably care a little about species.
Single/multi-cellular?
Haploid/diploid/polyploid?
Clonal/inbred/outbred?
Genome size? (Smallest 580 kb, largest 150 000 000 kb)
etc