The number of regular people willing to do exactly what the clones do, should easily outnumber the clones.
Maybe, but we don't have the foggiest idea how big the clone army actually is, or how many cloning facilities the Kaminoans have. The only concrete information on the size of the clone army is that "200,000 units" were ready in time for Geonosis with "a million more well on the way." 1.2 million is obviously an absurdly small number for a galactic war, so cue fandom debate on what a "unit" is.
There are units of non-clone/non-droid soldiers involved in the war, but we haven't seen much of them in TCW yet. Most of them are restricted to their home planets, like the Twi'lek resistance on Ryloth, or the Geonosians. Those are people defending their homes though, and they're always outnumbered by droid/clone forces.
Oooh, just thought of something interesting - what if a Jedi honestly believed the Separatists had a valid viewpoint and wanted to fight for them. That person wouldn't be a Sith, since their intentions would be for the good, as they see it.
I've been wanting to see something like that for some time. Back in Ep 2 Dooku told Obi-wan that the Senate was being controlled by a Sith lord called Darth Sidious, who had manipulated Nute Gunray (incidentally, his name is a combination of Newt Gingrich and Reagan) into the events of Episode 1. That is all absolutely true, and I really miss that aspect of Dooku. Seeing a Jedi who bought that line would be brilliant, thought Dooku would have to keep them very far away from Grievous and Ventress

Or to put it another way, if TCW is Anakin's story, then every element in the story should have something to do with Anakin, or at least not distract from it by suggesting unintentional things.
I meant that's why he didn't stick it in the films. He cut a lot of stuff for that reason, including Boba Fett trying to kill Mace Windu in ep 3, as well as the beginnings of the Rebellion. It absolutely should be in TCW, just as Boba Fett trying to kill Mace Windu made it into TCW, and we should see Padme/Bail/Mon Mothma slowly realizing who Palpatine is. TCW is the place for all these other stories to come out. Star Wars is a big universe and there's a heck of a lot more stories to tell than Anakin's.