Bombay Aloo made using potatoes done in Syed's pre-cooked mixed vegetables video method instead of boiled in turmeric water worked very well. I did it before he uploaded the video and added curry leaf and mustard seeds.
There is good information available in Syed's videos as well as the others mentioned. These are relatively new youtube presenters and they are worth watching. Take the opportunity to broaden your knowledge, look for pointers and tips, try things out and keep what you like. If you see something 'wrong' or that you don't like, work around it, ask or just ignore that part. I'm not going to cook everything I see but these are great developments. Imagine these videos coming out 10 or 15 years ago.
For example, I made Shah Cooks BIR naan yesterday to specification (except cooked inverted tawa) and they are excellent. I even had to add the little bit of extra flour just as he did in the video. I'm going to try The Bengali Cook's Garlic and Ginger paste (with coriander stalks) and Tomato Puree (pre-cooked) in my next batch of curries. All just little steps but possibly big advances.
I really don't care too much about 100% recreations of BIR as there is clearly no single correct dish and I'm not competing with UK restaurants. I'm now making better dishes than I was 3 weeks ago, and that's progress.
There is little doubt that the videos are not exactly commercial kitchen but they aren't meant to be. They are done at home for home cooking. I don't care. I'm grateful.