Currently too hard for me to say.
I'd say tight knit and organized are a slightly different category.
To me the most tight knit gangs are the smaller gangs with a lot of enemies. They all know each other and have a tighter bond usually, especially if they been around for along time
With the Mexican or Hispanic gangs usually the ones with "big homies" have a greater level of organization. I put F13, 18st, 38st, Harpys, avenues, Sereno etc up there for Mexicanhoods..
And gangs with less deeply rooted ties to a particular area are less organized and spread out.

For crips and bloods I couldn't call it exactly but for crips I'd have to go with the bigger well known hoods. East Coast, Rollin 60s , Rollin 40s, ETG etc.

Nah I doubt it. They just don't have the numbers.
I grew up with a few Tongans. Always seemed like real cool people though, just my experience.

Who's deeper 60s or East Coast?

I'd have to say 60s. Always hard to gauge numbers but I'm thinking of the demographics of the two areas and that 60s have a very big turf concentrated in one area while ECC has individual cliques, spread around the east side. Some of them very small in number surrounded by a bunch of other gangs.

I notice how the 60s I'd one of the top Crip set claim across the country. I'm not sure how many are legit branches but I would think the 60s are the largest Crip gang in our country. Don't come across many claiming ECC despite that being Raymond's group. Grapes, Rollin cards, Kitchen, and ETG are the ones on nationwide scale.

For Bloods: Bounty Hunters, Brims, Bishops, & Pirus.

Oh , Hoover Criminals are big nationwide too.