svg radialGradient gradientTransform : skewX

<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
  <radialGradient
    id="gradient1"
    gradientUnits="userSpaceOnUse"
    cx="100"
    cy="100"
    r="100"
    fx="100"
    fy="100">
    <stop offset="0%" stop-color="red" />
    <stop offset="50%" stop-color="yellow" />
    <stop offset="100%" stop-color="black" />
  </radialGradient>
  <radialGradient
    id="gradient2"
    gradientUnits="userSpaceOnUse"
    cx="100"
    cy="100"
    r="100"
    fx="100"
    fy="100"
    gradientTransform="skewX(20) translate(-35, 0)">
    <stop offset="0%" stop-color="red" />
    <stop offset="50%" stop-color="yellow" />
    <stop offset="100%" stop-color="black" />
  </radialGradient>

  <rect x="0" y="0" width="200" height="200" fill="url(#gradient1)" />
  <rect
    x="0"
    y="0"
    width="200"
    height="200"
    fill="url(#gradient2)"
    style="transform: translateX(220px);" />
</svg>