Since you are a beginner rider, getting a bike that is approachable and easy to live with would be our recommendation. Bikes like the Yamaha MT-15 and Honda Hornet 2.0 - both in your shortlist - will offer approachable performance and weight while being quite fuel efficient too. 

The Bajaj Dominar 400 - while a sorted bike in its own right - is a heavy machine, which will get quite tiring to manage at slow speeds for a newer rider. Instead, we'd recommend you take a look at the Bajaj Pulsar NS400Z, which offers more performance and features while being significantly lighter.

In case you decide that the power and relatively low fuel economy of a 400cc bike isn't for you, but you still don't want to go below 200cc and want something sharp-looking, we'd recommend taking a look at the Bajaj Pulsar N250 and Pulsar NS200. The N250 is a refined, smooth all-rounder, while the NS200 is an engaging and sporty machine. 

A test ride should help you make a more informed decision. 

Since you are a taller person, we would recommend you look at the Yamaha XSR155 instead of the MT-15 as the XSR is a more spacious machine which will be useful to you. For a similar price, you will also get larger machines like the Bajaj Pulsar N250, TVS Apache RTR 200 4V and Honda CB300F. It will offer you better performance at the expense of a small hit as far as fuel efficiency is concerned. 

Since you have mentioned that you are considering the Honda CB350 models. Do bear in mind that these are relaxed neo-retro roadsters which will offer you a more laidback riding experience and good comfort levels. Although fuel economy will be quite a bit lower than that of the smaller bikes we have mentioned above. It is also worth taking a look at the Royal Enfield Hunter 350 because it offers a similar experience to the CB350 but at a lower price and has comparable fuel economy and performance, too. 

A test ride of every bike you shortlist will help you make a decision. 

Since this is your first bike, you should ask yourself what sort of rider you are and then pick the machine accordingly. If you feel you enjoy speed and want a sporty, engaging machine, then something like a KTM 160 / 200 Duke, Yamaha YZF R15 V4 / MT-15 and XSR155 will be good options to consider. 

If you want to have a relaxed riding experience and want something stylish, then a Royal Enfield Hunter 350 or TVS Ronin would be a good starting point. Lastly, if you want a single 'standard' bike that can do most daily things, then something like a Honda CB300F would be a good option. 

If you want something that prioritises fuel efficiency, a 160cc commuter from Honda, TVS, Bajaj, Hero or Yamaha would be the way to go. 

Take thorough test rides of each machine you consider before making up your mind up. 

The Honda CB125 Hornet makes a good case for itself as your first bike with its lightweight, frugal engine and flashy style. You should also take a look at the Hero Xtreme 125R and TVS Raider because there are some areas where these bikes have an upper hand on the Honda. 

Bigger bikes like the Bajaj Pulsar NS160 and Yamaha MT-15 will offer you more performance, albeit at the cost of fuel efficiency. They will also be a little heavier, but it won't be a big difference. 

A test ride and a clear expectation of what you want from the bike will help you decide which bike is best for you. 

Since you have owned a Honda motorcycle in the past, sticking with the brand and getting the Hornet 2.0 and NX200 will make sense. Both are decently peppy, refined, comfortable and fuel-efficient machines which should be reliable in the long run. 

The Yamaha MT-15 will be the lightest machine on your list, and it is likely to also be the most fuel-efficient. Despite its small engine, it does offer a good level of performance. You should also take a look at the XSR155 because this is a more spacious motorcycle while being mechanically very similiar to the MT.

The TVS Ronin and Royal Enfield Hunter 350 will have the most comfort and will be different to ride than the other bikes owing to their relaxed engines. Do bear in mind that you are unlikely to see a fuel economy figure of 40kpl unless you ride very sedately on either of them. 

Since the machines you have shortlisted are very diverse, we'd recommend a test ride of all before you make a decision. 

All the options you're looking at are really credible ones, but between them all, the Yamaha XSR155 makes the most sense. Since you have had little experience riding a geared motorcycle, something light, friendly, and easy to manage, like the XSR, is a safe choice.

 And because it shares a lot of its hardware with the proven Yamaha YZF R15 V4 and Yamaha MT-15 V2, it is bound to be reliable like its sportier siblings. 

Since you have had a good experience with a Honda machine, you could stick with the brand and go with the Honda CB300F. The CB300F is light, comfortable, spacious and will return decent fuel economy. If you want to switch brands, the Bajaj Pulsar N250 and the Suzuki Gixxer 250 make for good upgrade options with their smooth engines and comfortable ergonomics. 

If you don't mind staying in the same displacement range while getting a significant performance bump, the KTM 160 Duke and Yamaha MT-15 warrant consideration. With their liquid-cooled engines and light weights, these two will give you the performance step up you want without sacrificing on mileage. 

The new Yamaha XSR 155 will have a more roomy and spacious riding position than the Yamaha MT-15. If you like the design, you can switch your choice. Given that this motorcycle is based on an existing and proven platform, there shouldn't be any serious issues, and you can make your purchase soon.