Is that using the free version without any paid for extras etc. I tried it a few years ago and Signal RGB seemed more complicated than it needed to be but saying that I was new to RBG shenanigans then. Been using the RGB software with my MSI board and the effects are very limited tbh. I presume the OP is using motherboard software to control the RGB on the fans so maybe that's why there's limited effects?
Yes am using the free version
Never actually counted how many there are
But probably few dozen free presets
Which you can then just use
Or tweak
How complicated varies
For some people it's just install it
And you're good to go
For others (myself included) there can be a bit
More involved
I have 7 manufacturers leds in my build
Including things like lian li which have controller boxes
So those things I have to tell it how many fans
Are on each channel of the controller
Then it let's me add what model lian li fans
So it knows how many leds in them
Considering it isn't just dealing with one brands closed ecosystem
Which Companies like gigabyte etc still can't
Do a decent job
A little bit of complication is totally worth the effort
Otherwise I would have several rgb software all running
At same time
And causing conflicts
And still be limited to a few rubbish effects
Think the op is using lian li L-connect
Another not great manufacturers software
Considering the cost of the fans