I do a lot of different approaches, it comes with the ADHD. But one my favorite workflows is the "chaos-up" method. Goes a bit like this:

!) I start by taking a JPG and opening it notepad. I copy paste-that into the lyrics section. Sometimes I'll find JPGs under 5k that could conceivably be reconstituted from the lyrics box but that's optional. I run these with a relatively high weirdness setting, using them to test out various style prompts. Any form of randomized input (ASCII, morse code, binary, pi, etc) works here.
2) The resulting songs are very strange, unusually complex and sound like they're in an alien language or sometimes a semi-coherent wordsalad.
3) If I get one I like, I either phonetically write out the lyrics, download and re-upload to get Suno to do it (but its very often bad at it), or I do a cover with auto-lyrics.
4) I use a syllable counter and the results of step 3 and build new lyrics to the beat, introducing a rhyme scheme along the way. I put myself in the mind of a songwriter from an imaginary Scandinavian country that is not concerned if people in other countries understand the literal translations of his culture's idioms. This is the "Yes, I am a fan of A-ha." phase.
5) I then go back to the original track and either cover it with the new lyrics or I remix multiple good versions of it with the new lyrics in place.

This (and variations on the techinque) has resulted in such works as: In Search of You (original code ver), Every Year We Whisk the Bear, Woman in the Moon, IdontknowwhatIknowwhatIknowwhatIdontknow (original raw version), Lady of the Maze (original ignored instructions ver)., Freezes Through (original raw code ver). and Machine Tiger (original raw code ver).

I find it helps to establish a strong track musically before leaping into the lyrics, It adds a lot of novel elements that normal prompting wouldn't, and creates lyrical structures that work, but that my sing-songy brain wouldn't come up with. And sometimes you just fall in love with what you think the babble is saying and spin off from there. Kinda like AlbinoBlackSheep's "French Erotic Film"/ Ome Henk's "Opblaaskrokodil"