Re: cheat sheets, mine has size three font
. That's largely disease notes, though, as most of the rest is very carefully engineered diagrams, micrographs, and things. I've seen teams with cheat sheets that have 5-6 font and nearly no diagrams on both sides. Honestly, I'm not sure what most of that is or in what way it's intended to be helpful
Re: bacterial groups, what you should really be asking is what unique characteristics are out there in important genera (as phyla are pretty broad, still). And, it's less knowing them by name (though the best teams can recognize key ones if prompted) and more knowing that they're out there and what their unique characteristics are, especially against the other major microbial groups. There's a chapter on diversity in the microbio books (and it's pain if you're not prepared for it), but the reference I like for this are review tables; there's a great one in one of the review books I have. Actually, let me check what the column headings are for that: phylum, class, important genera, and significant features. This makes diversity tangible, I think, and protects you from getting stung by the weirdos. Example: "Mycoplasma
species are neither Gram-positive nor Gram-negative. Explain.". A good (yet wrong) guess would be that they were acid-fast. But, that would be confusing them with the genus Mycobacterium
...anyway, the best teams know that mycoplasmas lack cell walls, making the question easy to answer. If teams didn't know the mycoplasmas, specifically, but knew that bacteria existed that didn't have cell walls, it'd be doable. Stuff like that...