Jason Hawrelak is the father of modern probiotic use, especially concerning SIBO small intestinal bacteria overgrowth.
Here is a concise overview
https://www.researchgate.net/publication/266449396_Probiotics_Choosing_The_Right_One_For_Your_Needs
Here is a lecture on Treatment of dysbiosis by Hawrelak. (You will need to pay) Day2 2 Jason Hawrelax Treatment Dysbiosis Small and Large Bowel | PDF | Gut Flora | Probiotic