The Honda CB350 and CB350 H'ness are essentially the same bike wearing different outfits. The former mimics the design language of the popular Royal Enfield 350s, while the latter has a distinct Honda design. 

As such, their riding experiences are going to be exceedingly similar and picking between the two will come down to which one you prefer the look of. 

Coming to your query, both these bikes offer good pillion comfort and are good to ride in dense city traffic with their neutral handling and light clutch action, thanks to the slip/assist clutch. 

All the bikes you are considering are great options and have reasonable servicing costs. The CB350 H'ness is a relaxed, comfortable retro bike with a smooth, torquey engine. The Honda NX200 is a tall, quasi-ADV based on the Hornet 2.0 street bike, which means it will be suitable for daily use. 

The Gixxer and V-Strom SX from Suzuki are refined, punchy machines that are also fuel-efficient and quite reliable. 

A test ride of all 4 is in order so that you can decide which is the best option for your needs. 

All bikes you have shortlisted make for good beginner bikes with their unique strengths. The Yamaha XSR155 / MT-15 will be the lightest and easiest to manage machines with a sporty and engaging engine + chassis combination. They will also return excellent fuel economy. However, over long stretches of bad roads, the stiff suspension will cause some discomfort.

The Honda CB350 H'ness and Royal Enfield Hunter 350 are laid-back roadsters with torquey, smooth 350cc engines. They will be more comfortable but will not have as good fuel economy or handling capabilities. 

It all boils down to the sort of experience you are after and the design you like the most, so a test ride of all four is in order. 

Let's dissect each bikes strenghts and weaknesses so you know what you're in for. The TVS Ronin is a relaxed, comfortable, peppy and relatively fuel-efficient machine. If you don't mind how it looks, the Ronin is a machine that will keep you satisfied for a long time.

The Yamaha XSR155 is essentially a handsome MT-15 with some small ergonomic changes. It is the sportiest machine of all the bikes you're considering and that reflects in its canted forward riding position and stiff suspension setup. If you have good roads around your residence, then the XSR makes for a compelling purchase.

The Royal Enfield Hunter 350 and the Honda CB350 H'ness are similar machines with somewhat familiar riding experiences. Both are comfortable, look good and have big, torquey air-cooled engines. The difference is that the Honda feels like a more substantial bike that needs a little more effort when riding, owing to its super tall gearing - not necessarily a bad thing, if you're into this sort of thing. 

The Hunter will feel smaller, lighter and more flickable inside the city. Additionally, its well-judged gearing will ensure you don't have to make many gear changes. 

Take a comprehensive test ride of all 4 before you decide.

With its neutral ergonomics, gentle and measured power delivery, light clutch action and manageable seat height, the Honda CB350 H'ness should prove to be a great first bike for most riders. 

Honda bikes also have a reputation for great reliability and low running costs, for by and large, most two-wheelers it sells in India, which should give you added peace of mind. 

If you want an alternative from another brand with a similar riding experience and style, then the Royal Enfield Hunter 350 makes for a great option. 

Take a thorough test ride of both before you make your decision.

With its low seat height, neutral ergonomics and smooth, thumpy engine, the Honda CB350 H'ness will be a great fit for someone who wants a mellow machine with lovely retro styling. 

You could also take a look at the Royal Enfield Bullet / Classic 350 because these modern 350cc REs are lovely machines that are now about as reliable as their competitors while also retaining that old-school feel. In case the Bullet / Classic prove to be too heavy, then the Royal Enfield Hunter 350 with its lower seat and less weight will also fit the bill. Take a test ride before you decide to go ahead with your purchase.