" If I did $5500 non deductible contribution AND and $1000 rIRA -> tIRA rollover in the same year..."
I'm still confused by this because you have provided incomplete and possibly conflicting information. Movement of funds from a Roth IRA to a traditional IRA can only be a recharacterization, not a rollover. Did you originally contribute $5,500 to a traditional IRA and $1,000 to a Roth IRA for 2019 or did you contribute $4,500 to a traditional IRA and $1,000 to a Roth IRA for that year? Your table appears to reflect the former. It seems odd that you would have contributed only $6,000 in 2020 if you were age 50 in 2019 and eligible to contribute $6,500 for 2019, making me think that you made an excess contribution for 2019 that is still present in your traditional IRA.
Regarding 2019, it seems that you recharacterized $1,000 of contribution, not $1,060, and the extra $60 transferred consisted of gains, not contributions, that were required to accompany the transfer. That $60 is not part of your basis since it was not part of your contributions.
