Hello! Lata- san
you categolize variable Kolam patterns in the web Q&A.

May I call them as the following in Tamil

The dots are encircled with curves or looped around with lines drawn around the dots.=Sikku(knot/ entangled) Kolam, the un-encircled with half around as Neli(snaky curve) Kolam
The dots are connected to form a pattern or different patterns.=Kudo(line)/Kambi(rod-string) Kolam like a Lotus
Line kolams have kolams drawn entirely of different sizes of lines , mostly with no dots. = Kudo Kolam
Free form kolams called Rangoli are kolams with either no dots at all or with a minimal amount of dots and the use of more geometrical shapes.
=Rangoli or Free Kolam