There are loads of fonts; there are loads of fonts that would go with this signature and your current ones.
But, before you can choose your font, you got to make sure you are not lacking a focal point within the background and render;which this one and your current signatures are.
Also, the backgrounds are plain and have a lot of extra space left over for something that could ,possibly, make a focal point within your signature(s).
You've got the right idea, but the text should be the last thing you do when making the signature. Making the background and render, to their best potential, helps you find the best-blending font.
If you had trouble getting the meaning of this reply, I would gladly explain in more depth to you.
Take Care,
~GFXerEffects