For braid to swivels - palomar
Leader to swivel - uni or improved clinch
For braid to leader - FG or Albright. Typically Albright for 15lb and under. FG is easier with heavier test.
Leader to hook - depends. Sometimes i snell, sometimes palomar, sometime improved clinch, sometime dropper loop (because its on a dropper loop)
Double uni or similar knot braid to leader/mono/flouro....youre doing yourself a disservice by causing a failure point at the knot. The braid will cut itself at the know under its advertised rating easily if theres a strain.