Look is a relatively new company, just founded in 2010. Then they purchased Pace American sometime around 2012...Pace is a long time trailer manufacturer. So based on that, Look = Pace American, if you want to search some for reviews on Pace trailers. Neo is a similarly 5-ish year old company, and their story of how their pre-2010 trailer company was run into the ground and "rescued/resurrected" by original owners under the new name Neo is right on their website. They appear to be independently owned. R&R also appears to be independently owned, and is probably the only company of the bunch that actually survived the economic downturn with few major shake-ups, and of course they have their relatively unique no-dealer factory-direct sales approach.
As for Ameralite...realize this is the same company as Forest River = US Cargo = Rance = Lightning....all now blended into one giant company that is owned by Berkshire Hathaway.
Basically there were huge shakeups in all these companies during the economic recession of 2008-2010...resulted in massive unemployment in the area they are all located....THE worst-hit area of the country due to lack of diversification of industries...mostly trailer and RV manufacturing and nothing else. And after the shake-out, many of the trailer mfg companies that managed to survive were rescued by some deep pockets who wanted to invest in this industry at the bottom and make a big profit out of their return to success, and as a result of the financial rescues and the recovering economy many of these names are changing and somewhat blending, and the stronger companies that survived have now come out of the ashes, establishing a name for themselves, and are doing pretty well again.
Recognize that every brand you just mentioned...R&R, Neo, Lightening, Ameralite, and Bravo, are made in factories that are within about a 45 minute drive of each other. You didn't mention Stealth (another independent), and Haulmark/Featherlite/Wells Cargo (all now owned by "Universal Trailer company")...but they're right in the mix there also, and they all have factories are in that same general location. I'm also sure there are more that I'm forgetting.
So to be real honest, they're all probably 98% identical in terms of construction quality and design...let's face it, they're just welded aluminum boxes, they're all made in the RV mfg district of northern Indiana/southern Michigan, likely all buy their materials from the exact same local material suppliers, and are assembled by many of the same workers who live in the area and occasionally jump between all these companies, following wages/benefits, or their friends/favorite production line managers and/or unions, just doing what they know how to do to make a living...welding and assembling trailers. I'm convinced that all of these trailers you are shopping are FAR more similar than many realize, or are willing to admit.
So I'd recommend you ignore the brand names. It doesn't matter. Just buy based on price, little details & options & features you want, and your own convenience of purchasing...dealer location or whatever. They'll all get your sleds where they need to go very effectively.