Proxy for wealth management and equity market

Would it make sense to consider stocks like Kfintech, BSE, CDSL as a proxy to the equity market/asset management/wealth management theme?

From what I have seen there are a lot of options to choose from in the above themes like –

• Wealth management (Anand rathi, 360 one, nuvama, motilal oswal etc.)
• asset management (hdfc, nippon India, aditya birla, UTI etc.)
• brokerage and trading (angel one, choice international, dhan etc.)

But since these are individual companies with relatively more competition than the proxy ones i listed above, I am thinking of narrowing it down do the common beneficiary of these themes.

Motivation behind this is mainly to spend less time on studying many companies and instead focus on a few.

Would like to hear thoughts about this.