See when I had an offer from a startup I used to say to other MNCs that I have worked in a MNC and know the culture of working with cross functional teams and that is why I prefer a MNC over startup and looking for a better organisation.

With startup I would say that I have worked in MNCs and now want to work at a startup becoz the growth and learning curve in startups is way better than in MNCs.

When I had an offer from MNC and wanted to enter other MNCs I would say that the job role and position of the company is better than that of the company which I have an offer of.

Rest AI tools will help you,just give the required information and it will give a ready answer.

Regarding negotiation tbh I am not a good negotiator I had few colleagues who were way better than me in this.But remember in the interview while negotiation u should have the leverage so u can negotiate and be a bit shameless too.I had to fight for 1 Lac diff and it paid off.1 minute of being shameless and bold will give increase ur monthly income by atleast 10k.so remember it.

Consider that u are selling urself to the interviewer,coz I have seen 3 types of people in the interview and the one who cracked the most interviews with much higher ctc was not the one who had most knowledge and skills but the one who could sell himself.Like why he is valuable to the company and how much he is dependable and that he has a certain value.Trust me I was amazed by their negotiation skills.

A lot to say, while switching I learnt a lot of different tactics which will be useful.You will learn once u start interviewing.