https://www.porydex.com/stats/2022-10/gen-8-ou/1825

Porydex is an excellent visualization of the Smogon raw usage data, and additionally includes over-time graphs and pokémon/move data.
A note about Porydex: unfortunately Smogon doesn't follow IV usage, so when Porydex lists a real stat value such as Relaxed :Ferrothorn:,
 it doesn't take into consideration the stat drop from 0 IV investment, and will list the real speed as 68 instead of 40.
You can partially assume from the nature, but some subtleties are lost.
Keep in mind some small amounts of data that are in the raw text may not be in Porydex and vice-versa.
Personally, I don't recommend using Porydex (or the Smogon analyses) to copy-paste sets, but rather to use as a guide or reference.




https://www.smogon.com/forums/threads/ss-ou-speed-tiers.3672175/

While a bit outdated and can have values that are not common or lack some that are,
 this is a quick and easy way to check out the real speed values of most mons in the meta.
Even now it can be useful if used in conjunction with Porydex.




https://marriland.com/tools/team-builder/en/

Most teambuilders have some strengths and some drawbacks, and I certainly don't love this one,
 but the format for showing defencive (and offencive) coverage is the most clean and straightforward.
I find it to be the most helpful in this regard; synergistic typing is very important when building a team from a defencive core.
It's easy to see why some cores are so good. Take a look at the resistance chart for :Tapu Fini: + :Ferrothorn: for example.




https://www.smogon.com/forums/threads/magic-number-of-hp.3456308/

There are also some general tips to follow in terms of EV investing and whatnot.
This post details most of the pertinent HP options. Of course also when running a non-Physical attacker,
 make sure to minimize IVs in attack to reduce Foul Play damage. Reducing HP IVs to below a tens threshold reduces LO damage.
Particular IV management may be necessary on ultra beasts.
Putting the last 4 or 8 EVs into speed even on a slow mon is a great option to avoid speed ties.