@NewUser If you don't won;t to go and create account on individual Mutual fund website/app, the best option for you without any middleman is go with KFintech and CAMS. And they can't become discount broker or anything related to stocks trading because they are RTAs
Application names
KFinKart,
myCAMS respectively
Brief about them:-
KFintech and CAMS are SEBI assigned RTAs(Registrar and Transfer Agents). There are total 40 odds mutual fund houses in india, 60% comes under KFintech rest 40% comes under CAMS.
eg. Axis comes under KFintech. HDFC, ICICI come under CAMS. So if you want to invest in axis MF you can do that by KFinKart. Similarly HDFC, ICICI investments can be done via myCAMS app.
You can track your all mutual funds investment and even family investments as well in these applications.
P.S. - This is from my own business knowledge that I got from working in this company so you can trust this info. Hope this helps