I'm a Capricorn Jan 14th.
I have noticed an interesting pattern with zodiacs. I have had major clashes with people born on the 2nd November and coincidentally had dated 2 people born on the 2nd Nov , initially thought we got on well and bam it was the worst. I since avoided 2nd Nov peeps .... Scorpios. I get on well with Scorpio's that were born closer to the cusp or on the Scorpio-Sagittarius Cusp people born between November 18 and 24 so I guess it's just in between Scorpio and Sagittarius
Leos clash quite badly with me. Being an Earth sign I tend to get on well with other earth signs very well Taurus, Virgo, and Capricorn Aqarians are on my good list i've had very close aquarian friends (friendships lasting well over 12 years and would have been for a lifetime) (People born around 31st January onwards
Surprisingly I clash a little with other Capricorns but I think that's normal. I do believe other elements of your chart will also make sense in how you get along with others. For me based on people in my life I definitely would say Saggi's, Taurus, Aquarius and Cancer are my top four
Leos and Libras, and Aries not so much