If you Google “list of meditation techniques” you’ll find there’s a lot
Examples: Headspace lists at least 8. Mindful Steward has an article “23 types of meditation: a beginners guide”. There is a reddit post titled “Last year I tried 57 different meditation techniques”. It links to this article which mentions where they got them from. They list some examples I have tried and some I’ve just read about.
As far as which ones I’ve done and which have become a regular thing, I don’t think that is going to give you any assistance. For an extended period I did focus on mantra meditation, for example using bija mantras. One I used a lot was Om Kleem. I’ve also used devotional gayatri mantras before, for example the Kamadev Gayatri mantra, meditating on the “god” of love, aka an image which is representational of the consciousness of desire and attraction in the universe. But that is a very specific one, and not everyone will find it useful. I’ve also used a type of vipassana a lot, and this type of gradual expanding and unifying awareness meditation can be quite useful. I’ve done the meditations on fire which I quite enjoyed, including a candle and an actual fire pit. Focus on the breath is also a good one especially for recentering on the life force.
But what’s going to help you is not going to be what’s helped me. If you’re looking for connection with the subconscious, then breathing, the navel/solar plexus/dantian or third eye are good focuses, and especially attempting to become as internally silent with your thoughts as possible. It’s easier to sense what’s going on inside you when the mental chatter calms down. But take a look at that link and you might get some ideas.